Pence previously said he would consider testifying. But to CBS, he said: “Congress has no right to my testimony on separation of powers under the constitution of the United States.
“And I believe it will establish a terrible precedent for the Congress to summon a vice-president of the United States to speak about deliberations that took place at the White House.”
Trump supporters attacked Congress after he told them to “fight like hell” to stop certification of Joe Biden’s election win, in service of the lie that it was the result of electoral fraud. Nine deaths have been linked to the riot, including suicides among law enforcement.
You might say an attempted coup encouraged by the outgoing President of the USA against this nation's government establishes a terrible precedent, especially if a Vice President refuses to testify about it.
In the book he is granting interviews to promote, Mike Pence noted of the insurrectionists "And, as I later learned, many had come looking for me." They had not come to join the evangelical Christian for Bible study. Rather, according to The New York Times
Shortly after hundreds of rioters at the Capitol started chanting “Hang Mike Pence!” on Jan. 6, 2021, the White House chief of staff, Mark Meadows, left the dining room off the Oval Office, walked into his own office and told colleagues that President Donald J. Trump was complaining that the vice president was being whisked to safety.
Mr. Meadows, according to an account provided to the House committee investigating Jan. 6, then told the colleagues that Mr. Trump had said something to the effect of, maybe Mr. Pence should be hanged...
Another witness, Cassidy Hutchinson, a former aide to Mr. Meadows who was present in his office when he recounted Mr. Trump’s remarks, was asked by the committee about the account and confirmed it, according to the people familiar with the panel’s work.
Pence acknowledged that he learned the President's "reckless words had endangered my family and all those serving at the Capitol." However, Mike Pence will not: testify before Congress; state that he would not support Donald Trump if he were nominated for President (or even for the nomination); state that lynching a Vice-President is wrong. (He was not asked the latter, to which he'd probably equivocate.)
That is not a profile in courage. It is a profile of cowardice.