Former US President Donald Trump doubled down on his anti-immigration rhetoric in a speech in Reno, Nevada, pledging to use overseas US troops to secure the border. Trump dedicated nearly 20 minutes of his 80-minute speech to talking about border security and immigration, repeating claims that "drug dealers," "gang members," "criminals" and people from mental institutions are "invading" the country. Trump's rhetoric on immigration has long drawn criticism for being extremist.