The presumptive Republican candidate in the US presidential election, Donald Trump, has suggested the country should consider using profiling to combat crime.

Some people run simply out of ego or greed. The publicity that attends a presidential bid can garner even a failed candidate a book contract, a television gig, or a well-paid speaking career (or perhaps all three). Trump ran on the basis of his celebrity.

After a month of increasing violence at rallies, Donald Trump's poll numbers have plunged to new lows, reports Mashable.

US Democratic hopeful Bernie Sanders has hit back after Republican front-runner Donald Trump said he had sent protesters to disrupt his rallies.

Donald Trump trains his fire on the protesters disrupting his rallies, branding them "thugs" and extremists, as White House rivals warned the Republican's heated rhetoric was dangerously fanning tensions.

Republican candidates for president trade sharp blows over foreign policy and the future of the Supreme Court in an often unruly and chaotic debate.