CNNCollins unsure if Trump will be 2020 GOP nomineeCNN(CNN) Sen. Susan Collins, a moderate Republican, said Monday that she was unsure whether President Donald Trump would be her party's nominee for president again in 2020. Collins, speaking on MSNBC, also said she was uncertain whom she would ...Susan Collins becomes first Republican in Congress to say Trump may not be GOP nominee in 2020SalonGOP senator: 'Too difficult to say' if Trump will be 2020 nomineeThe HillSen.