President Trump congratulated Attorney General William Barr for "taking charge" of the case against Trump's longtime friend.
She was worried the man had a gun, according to the former vice president.
The former New York City mayor can be heard defending the controversial policy in 2015 and claiming "all the crime" is in minority communities.
The Democratic presidential hopeful said he's in "good health" after having a heart attack in October.
The Republican senator said Lt. Col. Alexander Vindman's ouster was "justified."
Asked if he's considered stepping down, Perez said "absolutely not."
The Maine Republican bucked her party on witnesses but ultimately voted to acquit Trump of all charges.
Party officials blamed the vote-count delay on "technical difficulties" as precinct workers tried out an an app to report results.