Nearly 300 undocumented immigrant parents may have been separated from their children months before the Trump administration's "zero tolerance" policy along the border took effect, and officials did not keep a full record of separations, Customs and Border Protection admitted in a letter released Monday.

Potential presidential candidate Michael Bloomberg said that he "can't stand up here and tell you every decision I have made as mayor was perfect" and that his main goal as mayor was "saving lives" in remarks to civil rights leaders at the National Action Network on Monday. The former New York mayor, however, did not directly mention the controversial policing policy known as "stop and frisk" that he supported to fight crime as mayor -- an issue that could impact his possible 2020 run for President.