Mike Pence effort to block January 6 testimony could succeed, experts say

Constitutional provision could prevent special counsel from obtaining information about conversations with Trump

Mike Pence is expected to fight his grand jury subpoena as part of the January 6 criminal investigation with the speech or debate" protection - a move that could prevent the special counsel from obtaining his testimony about key conversations with Donald Trump and members of Congress.

The special counsel overseeing the Trump investigations recently issued a subpoena to Pence - a key witness with unique insight into a number of conversations with the former president and the efforts to stop the congressional certification of the 2020 presidential election.