A large majority of the GOP senators voted against convicting Trump after the second impeachment based on January 6. One of the arguments one frequently heard from them at the time–most notably, from Mitch McConnell–was that Trump was subject to the criminal law for his actions, so the impeachment process was inappropriate.
Today, the GOP, to a man, sees all of the Trump criminal indictments, including those encompassing the unlawful effort to overturn the election, as an outrageous partisan prosecutorial overreach. Trump is even using his “acquittal” in the impeachment trial as an argument that the prosecution violates the Constitution.
Go figure.