Story highlights Justices held closed-door meeting to decide whether to hear appeal

Unclear, but justices could need more time; next meeting Dec. 7

Some states have approved same-sex marriage; while others have banned it

Court again could be at center of case with huge social, legal and political stakes

The Supreme Court took no action Friday on a pending series of appeals over the divisive issue of same-sex marriage.

The justices had a closed-door conference to consider whether to accept for review several challenges to federal and state laws restricting the ability of gay and lesbian couples to legally wed.

But the court, without explanation, had nothing to report on the pending appeals. It was perhaps a sign it needed more time to consider the complex legal and constitutional questions.

If the high court has merely delayed consideration of the same-sex marriage cases, it may be prepared to revisit them as early as next Friday, when the justices hold another private conference.

The political, social, and legal stakes of this long-simmering debate would once again put the high court at the center of national attention, a contentious encore to its summer ruling upholding the massive health care reform law championed by President Barack Obama.

Photos: Photos: Supreme Court cases that changed America Photos: Photos: Supreme Court cases that changed America Supreme Court cases that changed America – Hollingsworth v. Perry (2013): The Supreme Court dismissed an appeal over California's Proposition 8 on jurisdictional grounds. The voter-approved ballot measure barring same-sex marriage was not defended by state officials, but rather a private party. This ruling cleared the way for same-sex marriage in California to resume, but left open-ended the legal language of 35 other states barring same-sex marriage. Take a look at other important cases decided by the high court. Hide Caption 1 of 17 Photos: Photos: Supreme Court cases that changed America Supreme Court cases that changed America – United States v. Windsor (2013): When her wife died in 2009, Edith Windsor, 84, was forced to pay hundreds of thousands of dollars in estate taxes because her marriage was not recognized by the federal government's Defense of Marriage Act of 1996. The Supreme Court struck down the part of the law which denied legally marriage same-sex couples the same federal benefits provided to heterosexual spouses. Hide Caption 2 of 17 Photos: Photos: Supreme Court cases that changed America Supreme Court cases that changed America – National Federation of Independent Business v. Sebelius (2012): The Supreme Court upheld most of the Affordable Care Act, the Obama administration's health care reform law, on June 28, 2012. The decision determined how hundreds of millions of Americans will receive health care. Hide Caption 3 of 17 Photos: Photos: Supreme Court cases that changed America Supreme Court cases that changed America – Citizens United v. Federal Election Commission (2010): Activists rally in February 2012 to urge the Supreme Court to overturn its decision that fundamentally changed campaign finance law by allowing corporations and unions to contribute unlimited funds to political action committees not affiliated with a candidate. Hide Caption 4 of 17 Photos: Photos: Supreme Court cases that changed America Supreme Court cases that changed America – Texas v. Johnson (1989): The Supreme Court overturned the decision that convicted Gregory Lee Johnson of desecrating a venerated object after he set an American flag on fire during a protest. The court ruled that Johnson (at right with his lawyer, William Kunstler) was protected under the First Amendment right to freedom of speech. Hide Caption 5 of 17 Photos: Photos: Supreme Court cases that changed America Supreme Court cases that changed America – United States v. Nixon (1974): When President Richard Nixon claimed executive privilege over taped conversations regarding the Watergate scandal, the Supreme Court ruled that he had to turn over the tapes and other documents. The ruling set a precedent limiting the power of the president of the United States. Hide Caption 6 of 17 Photos: Photos: Supreme Court cases that changed America Supreme Court cases that changed America – Roe v. Wade (1973): Norma McCorvey, identified as "Jane Roe," sued Dallas County District Attorney Henry Wade over a law that made it a felony to have an abortion unless the life of the mother was in danger. The court agreed with Roe and overruled any laws that made abortion illegal in the first trimester. Here, McCorvey, left, stands with her attorney Gloria Allred in 1989. Hide Caption 7 of 17 Photos: Photos: Supreme Court cases that changed America Supreme Court cases that changed America – Miranda v. Arizona (1966): Ernesto Miranda confessed to a crime without the police informing him of his right to an attorney or right against self-incrimination. His attorney argued in court that the confession should have been inadmissible, and in 1966, the Supreme Court agreed. The term "Miranda rights" has been used since. Hide Caption 8 of 17 Photos: Photos: Supreme Court cases that changed America Supreme Court cases that changed America – Gideon v. Wainwright (1963): The Supreme Court overturned the burglary conviction of Clarence Earl Gideon after he wrote to the court from his prison cell, explaining he was denied the right to an attorney at his 1961 trial. Hide Caption 9 of 17 Photos: Photos: Supreme Court cases that changed America Supreme Court cases that changed America – Mapp v. Ohio (1961): The Supreme Court overturned the conviction of Dollree Mapp because the evidence collected against her was obtained during an illegal search. The ruling re-evaluated the Fourth Amendment, which protects citizens against unreasonable searches and seizures. Hide Caption 10 of 17 Photos: Photos: Supreme Court cases that changed America Supreme Court cases that changed America – Brown v. Board of Education (1954): Nathaniel Steward recites his lesson surrounded by white classmates at the Saint-Dominique School in Washington. In Brown v. Board of Education, the Supreme Court ruled that it was unconstitutional to separate students based on race. Hide Caption 11 of 17 Photos: Photos: Supreme Court cases that changed America Supreme Court cases that changed America – Korematsu v. United States (1944): Fred Korematsu, a Japanese-American man, was arrested after authorities found out that he claimed to be a Mexican-American to avoid an internment camp during World War II. The court ruled that the rights of an individual were not as important as the need to protect the country during wartime. In 1998, President Bill Clinton awarded Korematsu the Presidential Medal of Freedom. Hide Caption 12 of 17 Photos: Photos: Supreme Court cases that changed America Supreme Court cases that changed America – Plessy v. Ferguson (1896): Homer Plessy was arrested when he refused to leave a whites-only segregated train car, claiming he was 7/8 white and only 1/8 black. The Supreme Court ruled that "separate but equal" facilities for blacks were constitutional, which remained the rule until Brown v. Board of Education in 1954. Hide Caption 13 of 17 Photos: Photos: Supreme Court cases that changed America Supreme Court cases that changed America – Dred Scott v. Sandford (1857): When Dred Scott asked a circuit court to reward him his freedom after moving to a free state, the Supreme Court ruled that Congress didn't have the right to prohibit slavery and, further, that those of African-American descent were not protected by the Constitution. Hide Caption 14 of 17 Photos: Photos: Supreme Court cases that changed America Supreme Court cases that changed America – Gibbons v. Ogden (1824): This was the first case to establish Congress' power to regulate interstate commerce. The ruling signaled a shift in power from the states to the federal government. Aaron Ogden, seen here, was given exclusive permission from the state of New York to navigate the waters between New York and certain New Jersey ports. When Ogden brought a lawsuit against Thomas Gibbons for operating steamships in his waters, the Supreme Court sided with Gibbons. Hide Caption 15 of 17 Photos: Photos: Supreme Court cases that changed America Supreme Court cases that changed America – McCulloch v. Maryland (1819): In response to the federal government's controversial decision to institute a national bank in the state, Maryland tried to tax the bank out of business. When a federal bank cashier, James W. McCulloch, refused to pay the taxes, the state of Maryland filed charges against him. In McCulloch v. Maryland, the Supreme Court ruled that chartering a bank was an implied power of the Constitution. The first national bank, pictured, was created by Congress in 1791 in Philadelphia. Hide Caption 16 of 17 Photos: Photos: Supreme Court cases that changed America Supreme Court cases that changed America – Marbury v. Madison (1803): When Secretary of State James Madison, seen here, tried to stop Federal loyalists from being appointed to judicial positions, he was sued by William Marbury. Marbury was one of former President John Adams' appointees, and the court decided that although he had a right to the position, the court couldn't enforce his appointment. The case defined the boundaries of the executive and judicial branches of government. Hide Caption 17 of 17

Photos: Today's Supreme Court Photos: Today's Supreme Court The justices of the US Supreme Court sit for an official photograph on June 1, 2017. In the front row, from left, are Ruth Bader Ginsburg, Anthony Kennedy, Chief Justice John Roberts, Clarence Thomas and Stephen Breyer. In the back row, from left, are Elena Kagan, Samuel Alito, Sonia Sotomayor and Neil Gorsuch. Hide Caption 1 of 10 Photos: Today's Supreme Court In 2005, John Roberts was nominated by President George W. Bush to succeed Sandra Day O'Connor as an associate justice on the US Supreme Court. After Chief Justice William Rehnquist died, Bush named Roberts to the chief justice post. The court has moved to the right during Roberts' tenure, although Roberts supplied the key vote to uphold Barack Obama's Affordable Care Act. Hide Caption 2 of 10 Photos: Today's Supreme Court Anthony Kennedy was appointed to the court by President Ronald Reagan in 1988. He is a conservative justice but has provided crucial swing votes in many cases. He has authored landmark opinions that include Obergefell v. Hodges, which legalized same-sex marriage nationwide. Hide Caption 3 of 10 Photos: Today's Supreme Court Clarence Thomas is the second African-American to serve on the court, succeeding Thurgood Marshall when he was appointed by President George H. W. Bush in 1991. Thomas is a conservative and a strict constructionist who supports states' rights. Hide Caption 4 of 10 Photos: Today's Supreme Court Ruth Bader Ginsburg is the second woman to serve on the Supreme Court. Appointed by President Bill Clinton in 1993, she is a strong voice in the court's liberal wing. Hide Caption 5 of 10 Photos: Today's Supreme Court Stephen Breyer was appointed by Clinton in 1994 and is part of the court's liberal wing. Hide Caption 6 of 10 Photos: Today's Supreme Court Samuel Alito was appointed by President George W. Bush in 2006 and is known as one of the most conservative justices to serve on the court in modern times. Hide Caption 7 of 10 Photos: Today's Supreme Court Sonia Sotomayor is the court's first Hispanic and third female justice. She was appointed by Obama in 2009 and is regarded as a resolutely liberal member of the court. Hide Caption 8 of 10 Photos: Today's Supreme Court Elena Kagan is the fourth female justice to ever be appointed, and she is counted among the court's liberal wing. She was appointed by Obama in 2010 at the age of 50. She is the court's youngest member. Hide Caption 9 of 10 Photos: Today's Supreme Court Neil Gorsuch is the court's newest member. He was chosen by President Donald Trump to replace Antonin Scalia, who died in 2016. Hide Caption 10 of 10

Three separate issues on same-sex marriage confront the justices, including federal benefits, state benefits and state referendums.

Although there was no certainty the court was prepared to announce it would be tackling the issue, there was building anticipation among advocacy groups on both sides of the debate.

The Boston-based Gay & Lesbian Advocates & Defenders had set up temporary offices in a building next door to the high court to await word. Officials there privately expressed a measure of anxiety as the hours passed with no announcement.

The organization represents a broad group of gay and lesbian individuals and families in New England who were denied a range of federal benefits under the federal Defense of Marriage Act, or DOMA.

For federal purposes under the 1996 law, marriage is defined as only between one man and one woman. That means federal tax, Social Security, pension, and bankruptcy benefits, and family medical leave protections -- do not apply to gay and lesbian couples.

Earlier this month, voters in Maryland, Washington, and Maine approved same-sex marriage, adding to the six states and the District of Columbia that already have done so. Minnesota voters also rejected an effort to ban such unions through a constitutional amendment.

The court on Friday did accept for review two unrelated cases, including an appeal of whether human genes are patentable.