“Rubio, 53, has said in recent interviews that Ukraine needs to seek a negotiated settlement with Russia rather than focus on regaining all territory that Russia has taken in the last decade. He was also one of 15 Republican senators to vote against a $95 billion military aid package for Ukraine, passed in April.”
That was the reason, but still a DUMB MOVE (unless Trump, yet again, is playing 5-D Chess).
Maybe he wants Marco OUT of the senate, hoping for a more conservative replacement. ?