Ben Sasse
"He is a physical coward but he’s perfectly happy when other people commit violence on his behalf," said the president's niece.
A number of senior Republicans have broken ranks with Trump and backed the impeachment efforts.
The president has a "brokenness in his soul," and is "addicted to division," said the senator.
Senator Ben Sasse said Trump secretly mocks evangelicals, mistreats women, "sells out our allies" and has "flirted with white supremacists."