President Obama's decision to issue an executive order without the approval of Congress is causing a firestorm across the country.
Republicans say the move is illegal. Four governors are threatening to sue the President over his plan to shield million of undocumented immigrants from deportation
But Barack Obama is not the first President to go at it alone.
CNN's Tom Foreman has the report.
President Obama is doubling down on immigration.
"I indicated to (House) Speaker (John) Boehner several months ago that if in fact Congress failed to act I would use all the lawful authority that I possess to try and make the system work better. And that's gonna happen, that's gonna happen before the end of the year," said Obama.
Congressional Republicans are vowing to fight President Barack Obama's plan to make immigration changes through executive action, but they are struggling with how to do that without triggering another government shutdown.
OutFront, Jose Antonio Vargas is a Pulitzer prize-winning journalist who revealed and chronicled his own life as an undocumented immigrant in America and Derrick Morgan who served as special counsel to vice president Dick Cheney.
Washington (CNN) - Former President George W. Bush said Tuesday that he wanted to publish his personal biography about his father, former President George H.W. Bush, now because "I wanted Dad to be alive - to be able to see how much not only I care for him but a lot of people care for him."
"His presidency in many ways was overshadowed by his predecessor, and that's understandable," Bush said. "[But] people are beginning to reassess the presidency of 41 and I want to be a part of that process and I wanted him to know that process was going to take place."
Bush's comments came at an event with his father Tuesday marking the launch of the 43rd president's personal biography of the 41st president.
The discussion was moderated by former George W. Bush chief of staff Andy Card and held at the George H.W. Bush Presidential Library at Texas A&M University in College Station. It was a heartfelt tribute to the elder Bush, who left the White House 22 years ago and is now 90.
Is the president's war against ISIS illegal?
Senator Rand Paul believes it is. The Kentucky Republican, who is eyeing a presidential run, wrote an op-ed in The Daily Beast, saying: "...this war is now illegal. It must be declared and made valid, or it must be ended. Congress has a duty to act, one way or the other."
OutFront, Elise Jordan, who is advising Senator Paul on foreign policy issues and Lanny Davis, former White House special counsel in the Clinton administration.
Republicans made history on election night, beyond taking control of the Senate. Voters elected a slate of younger, more diverse Republican candidates that include some major historic firsts.
Thirty-year-old Elise Stefanik is the youngest woman ever elected to Congress from either party. Tom Cotton is the first Iraq War and the first Afghanistan war veteran to be elected to the Senate.
This new tidal wave of Republicans will also include several presidential contenders who bring their own agendas to the Hill.
In an interview with CNN's Erin Burnett, Republican Senator Tim Scott of South Carolina says his election was "one of the most remarkable experiences of my life."