The Republican Matt Gaetz pushed Trump's goal of building a wall across the southern border of the US during a Congress hearing on gun reform. Arguing against the proposed HR8 bill, which would require universal background checks, he said: 'HR8 would not have stopped many of the circumstances ... but a wall, southern border, may have.' Gaetz's comments angered Manuel Oliver and Fred Guttenberg, both fathers who lost their children in the Parkland shootings in 2018, which prompted Gaetz to call for Oliver to be thrown out