The reported release last year of more than 36,000 criminal illegal aliens is part of a larger annual trend of thousands of such releases since 2009, according to the authors of a book documenting the case for impeaching President Obama.

The Obama administration’s release of the criminals, in numbers larger than what is publicly known, has generating crime waves and serves as a clear and present danger to the public, argue New York Times bestselling authors Aaron Klein and Brenda J. Elliott in their book “Impeachable Offenses: The Case to Remove Barack Obama from Office.”

On Monday, a Center for Immigration Studies report found that in 2013 the U.S. Immigration and Customs Enforcement agency, or ICE, released violent criminals, including murderers, rapists, kidnappers and drug dealers.

The offenders were among the 36,007 criminal illegal aliens released last year who committed 87,818 crimes, including 15,635 for driving while intoxicated.

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The statistics shows ICE released illegals jailed for 9,187 dangerous drug infractions, 426 sexual assault convictions, 303 kidnapping convictions, 193 homicide convictions, 1,317 domestic violence convictions and 1,075 aggravated assault convictions.

Last year, it was widely reported ICE, a section of the Department of Homeland Security, freed from prison 622 criminal immigrants, including 32 with multiple felony convictions.

The Obama administration initially blamed the controversial move on the budget sequester cuts.

However, the releases were just the tip of the iceberg, documented Klein and Elliott in “Impeachable Offenses,” which was published last August.

The authors cited ICE documents that state more than 8,000 criminal illegal aliens were released between fiscal years 2009 and May 2011 alone.

A full chapter in the book documents other ways Obama circumvented Congress to enact immigration reform, possibly violating the U.S. Constitution and committing potentially impeachable acts.

ICE statistics show the agency released 3,847 convicted criminal aliens in 2009, 3,882 in 2010 and 1,012 through part of 2011.

A 2011 audit by the DHS inspector general further found 809 recidivist Level 1 illegal immigrant criminals eligible for deportation were released from California and Texas jails in 2009.

ICE defines Level 1 as the “most egregious criminal aliens, who pose a significant public safety risk.”

Offenses include homicide, kidnapping, sexual assault, robbery, aggravated assault, threats, extortion, sex offenses, cruelty toward family, resisting an officer, illegal weapon possession, hit and run, and drug offenses accompanied by sentences of more than a year.

Why were the criminal illegals released? The audit blamed the actions on “agent ‘staffing challenges,’” such as vacancies and “increasing workload levels.”

In most cases, the criminal illegals were automatically released after ICE failed to file the required “detainer” paperwork within 48 hours of the apprehension. The notice declares ICE’s intent to begin removal proceedings against the criminal illegal.

The government previously quietly conceded that released criminal illegals are responsible for new crime waves, report Klein and Elliott in the book.

An August 2012 Congressional Research Service report stated the “decision not to deport some arrested illegal immigrants enabled a crime wave.”

While no specific victims were publicly identified, the CRS reported illegal immigrants released from custody between 2008 and mid-2011 were “charged with 16,226 subsequent crimes, including 19 murders, 142 sex crimes and thousands of drunk-driving offenses, drug-crimes and felonies.”

“Impeachable Offenses” further documents ICE catch-and-release efforts in which large numbers of illegals, including criminals, are rounded up but only a tiny number are charged with crimes.

At the end of September 2011, for example, ICE arrested 2,900 illegal immigrants with criminal records coming from all 50 states and four territories.

All had at least one criminal conviction, and “at least 1,282 had been convicted of multiple charges, and more than 1,600 had felony convictions including manslaughter, attempted murder, kidnapping, armed robbery, drug trafficking, child abuse, sexual crimes against minors, and aggravated assault.”

More than 25 percent of those caught were immigration fugitives. Another 386 had re-entered the U.S. illegally after being removed “multiple times.”

However, only 146 of those arrested during the 2011 sweeps were turned over for prosecution. Of the total arrested, 42 were identified as gang members.

Book fuels national debate

MSNBC reported Klein and Elliott’s “Impeachable Offenses” fueled the national conversation to impeach Obama, while BuzzFeed.com reported the book “ushers in the Obama impeachment movement.”

The book lays out the blueprint for impeaching Obama, alleging high crimes, misdemeanors, bribery and other offenses committed against the U.S. Constitution and the limitations on the executive office.

The Daily Mail of London has called the “Impeachable Offenses” “explosive,” reporting the book contains a “systematic connect-the-dots exercise that the president’s defenders will find troublesome.”

“Consider this work to be the articles of impeachment against Barack Obama,” stated Klein.

“Every American, whether conservative or liberal, Democrat, Republican or independent, should be concerned about the nearly limitless seizure of power, the abuses of authority, the cronyism, corruption, lies and cover-ups documented in this news-making book,” Klein said.

The authors stress the book is not a collection of generalized gripes concerning Obama and his administration. Rather, it is a well-documented indictment based on major alleged violations.

Among the offenses enumerated in the book: