Florida Republican Rep. Anna Paulina Luna blasted a so-called “immigration expert” testifying before a House committee in Washington on Wednesday when he began laughing at her over her accusations that the Biden administration is aiding in the trafficking of children at the southern border. David J. Bier, associate director of immigration studies at the Cato Institute, was testifying before lawmakers during a House hearing on immigration when he began openly laughing at Rep. Luna when she was asking him her questions. The Cato Institute is a libertarian think tank based in Washington, D.C., that is funded by the Koch Brothers...