Donald Trump and Joe Biden have squared off over immigration policies, including the US government being unable to locate the parents of more than 500 immigrant children. ‘Children are brought here by coyotes and lots of bad people, cartels, and they’re brought here and they used to use them to get into our country. We now have as strong a border as we’ve ever had,’ Trump said. The president also criticised immigration under the previous Obama-Biden administration, including the catch and release policy, saying ‘those with the lowest IQ’ were the only ones who returned for an immigration hearing