evidence: President Donald Trump and former Vice President Joe Biden faced off Thursday in their final presidential debate, which took place at Belmont University in Nashville, Tennessee. Over 90 minutes, they covered a wide range of topics in a more substantive way than in their first debate — thanks in part to fewer interruptions because each opponent's microphone was muted during initial responses. [...] Biden and Trump sparred over immigration and Trump's policy of separating children from their parents at the border. Trump was asked how he would reunite the reportedly more than 500 children whose parents can't be located. [...] "They [the Trump administration] separated them at the border to make it a disincentive to come here to begin with," he said.