Flake quits

Flake announces retirement as he denounces Trump

If Flake's floor speech — and retiring Republican Sen. Bob Corker's scathing criticism of the president earlier Tuesday — was any indication, Trump could be in for a long year of vocal opposition from prominent members of his own party before they leave the Senate. 

Flake will be treated kindly by the history books.  He never endorsed Trump, and later wrote a book repudiating everything Trump.