Sen. Elizabeth Warren will join the Armed Services Committee in 2017, leading to speculation that she is preparing for a run at the presidency in 2020, The Hill reports.

The Massachusetts Democrat's three brothers all served in the military and a Pentagon report put her state in the top 10 states in military spending, the Hill report said.

Warren, who joined the Senate in 2013, had been pressured to seek the presidency in 2016; instead she became a vocal opponent of Republican candidate Donald Trump and a supporter of Hillary Clinton.

Speculation about a 2020 run for her began before Clinton had conceded the race, The Hill said.

The senator would be 71 in 2020. She told a Massachusetts TV station, "Oh, come on," when asked if she was considering a 2020 run.

Some conservatives believe that her joining the committee is a political move.

"America's military men and women deserve better than Warren using the Armed Services Committee as yet another platform for her all-but-announced 2020 presidential campaign…Warren has fought to cut the U.S. military, weakening our nation’s security," Jeremy Adler, a spokesman for America Rising Squared, an offshoot of conservative super-PAC America Rising, said.

Democracy for America spokesman Neil Sroka said he would be "thrilled" if Warren ran in 2020.

He said her being on the committee helps Democrats, regardless of her political aspirations.

"Seeing Elizabeth Warren on the Armed Services Committee and seeing her range of knowledge and experience grow is an unmitigated good thing for the Democratic Party," he said.

Sroka added that Warren's history of criticism against Trump and Wall Street is what Democrats are looking for: "You're going to need someone making a forceful case against powerful business interests," he said.

Massachusetts' senators have a history on the committee, including Warren’s predecessor, the late Democrat Sen. Ted Kennedy, and Republican former Sen. Scott Brown, the Hill reported.

A spot on the Armed Services Committee will allow Warren a forum to speak out against the Trump administration on security and military spending,

"We've already been worried about Donald Trump's ties to the Russians," she told WCVB, a local TV station.

Back in June, when Clinton had not yet chosen a vice-presidential running mate, RealClearPolitics reported criticism of Warren by Clinton ally and former Pennsylvania Gov. Ed Rendell. He said she was not ready for the presidency. "I think Elizabeth Warren is a wonderful, bright, passionate person, but with no experience in foreign affairs and not in any way, shape or form ready to be commander-in-chief."