Whereas the president has the motive to cover up and to testify falsely.

CNN

The President's manipulation of friendly witnesses to testify falsely, if unknowingly, extended for months until the DNA evidence shattered both his public and private positions.

CNN: Sen. Gorton's closed-door impeachment statement

And worse, the false witnesses that make the accusations are rarely, if ever, prosecuted - though in a multitude of cases they have recanted and have stated under oath that they were induced to testify falsely.

CENTERFORSECURITYPOLICY: A rare victory in the judicial war in Peru