US election: Obama urges Republicans to shun Trump
US President Barack Obama has urged senior Republicans to formally withdraw their endorsement of Donald Trump as their presidential candidate.
At a rally in support of Democratic contender Hillary Clinton, Mr Obama said it didn't make sense to denounce Mr Trump's controversial remarks while still backing him for the White House.
Many top Republicans have distanced themselves from Mr Trump over a video in which he boasts of groping women.
Mr Trump accused them of disloyalty.
He was particularly scathing about House Speaker Paul Ryan whom he described as a "weak and ineffective"... read more