Pence said this on Wednesday, and IT WAS A LIE:

“Let me be very clear that the President’s decision to accept the recommendation of the deputy attorney general and the attorney general to remove Director Comey as the head of the FBI was based solely and exclusively on his commitment to the best interests of the American people and to ensuring that the FBI has the trust and confidence of the people this nation."

Even Trump, in his ever-evolving explanations, said this was not true.