Donald Trump has unleashed a torrent of Twitter attacks on the party he hopes to lead to the White House.

Donald Trump has fired fresh criticism at Republican House Speaker Paul Ryan after he effectively abandoned hopes of Mr Trump winning the presidential election.

America's most powerful Republican has told his party that he is now focused on ensuring Hillary Clinton is not handed a blank cheque as president in a Democratic-controlled Congress - suggesting he does not believe Donald Trump can win the US election.

Donald Trump's running mate Mike Pence is breaking with the Republican nominee by endorsing House Speaker Paul Ryan in his primary fight.

Donald Trump made the "textbook definition of a racist comment" in saying an American-born judge is not qualified to preside over a case because of his Mexican heritage, US House of Representatives Speaker Paul Ryan has said.

US House of Representatives speaker Paul Ryan has endorsed Donald Trump's bid to be US president.

House Speaker Paul Ryan still has differences with Donald Trump, but he is endorsing the Republican presidential candidate to help unify the party.

House Speaker Paul Ryan still has differences with Donald Trump, but he is endorsing the Republican presidential candidate to help unify the party.

US Republican presidential candidate Donald Trump and House Speaker Paul Ryan have pledged to work together despite their differences.

With US Republicans sharply split over a front-runner they cannot unite behind, a new group is trying to push the country’s top elected Republican, Paul Ryan, into the White House race.

The GAA has erred in altering the penalty rule for hurling, according to Dublin’s Paul Ryan who believes there was a considerably easier and better means of solving what had become a thorny issue for the association.

Ireland’s members of the European Parliament were split in votes on the controversial issues of arms, GMOs, fracking, and global warming, a report has shown.