Sen. Susan Collins (R-Maine) on Saturday became the 3rd Republican senator to break ranks with GOP leadership and condemn President Trump's public call for China to investigate former Vice President Joe Biden and his son, according to the Bangor Daily News.
The big picture: Collins joins Sens. Mitt Romney (R-Utah) and Ben Sasse (R-Neb.) in publicly criticizing Trump's comments, which he made just days after Democrats launched a formal impeachment inquiry over revelations that he had made the same request to the president of Ukraine.