February 2, 2021: Former President Donald Trump announced that the two new attorneys would lead his impeachment defense team on Sunday.

The announcement came after a day it was reported five members of Trump’s team split with him.

Trump announced David Schoen would lead his legal team, a criminal defense attorney currently working in Alabama and New York and a former district attorney in Pennsylvania named Bruce Castor Jr.

“I consider it a privilege to represent the 45th President,” Castor said in a statement released by Trump. “The strength of our Constitution is about to be tested like never before in our history. It is strong and resilient. A document written for the ages, and it will triumph over partisanship yet again, and always.”

Both the lawyers are well known to handle high-profile cases.

Castor garnered headlines after he declined to prosecute actor Bill Cosby in 2005 on sexual assault allegations that years later sent Cosby to prison.

Schoen has been involved in cases like Roger Stone, a key Trump ally who was pardoned by the former president after charges stemming from; the investigation into Russian meddling in the 2016 election.

The two lawyers’ announcement shows a remarkable sudden shift that added uncertainty to Trump’s legal strategy. But in the notice of their joining Trump’s defense team, the pair hint at what could be one core argument: whether it’s Constitutional for the Senate to hold a trial for a president who is no longer in office.

Both Schoen and Castor agree that this impeachment is unconstitutional.

While trying a former president has never been tested, the Senate has taken up impeachment trials for others even after leaving office, including senators, judges, and the Secretary of War in 1876.

The attorneys initially tapped to defend the former president who split from the team include South Carolina lawyers Butch Bowers, Deborah Barbier, Greg Harris, Johnny Gasser, and North Carolina lawyer Josh Howard.

The political dynamics had shifted significantly since Trump’s trial last year, but it’s still unlikely that he will face a conviction in the Senate trial.

Last year, Trump enjoyed nearly all Republicans remaining united against charges that he abused his office’s power to pressure Ukrainian officials to investigate his political rival, now-President Joe Biden.