Democratic Rep. Alexandria Ocasio-Cortez tore into what she called the Trump administration’s “policy of dehumanization” and stood by claims that detained migrants were told to drink out of toilet bowls at a fiery and emotional hearing about the migrant crisis at the border that featured the New York lawmaker and her freshman allies. The House Oversight Committee hearing Friday on child separation included a host of high-profile witnesses. Among them were the freshman Democratic lawmakers -- known informally as the "Squad" -- who recounted their recent visit to the border, which itself became a flashpoint in the already raging debate...