leane wen. >> still breaking news over wearing masks. today president biden promised to support local school districts in fights over the mandates. >> some politicians are trying to turn public safety measures, that is children wearing masks in school, into political disputes for their own political game. some are trying to take power away by banning masks in school. they're setting a dangerous tone. >> paulo santiago joins us with the latest. what is the latest in the debate over the mandates in miami-dade county. >> reporter: anderson, i just spoke to the superintendent in miami-dade. he knew if he made the decision he made tonight, he could have some consequences and a back and forth but ultimately thought he was on the right side of the issue in supporting the board that voted 7-1 to implement a mask mandate. that is something the governor says violates the law and it eventually bans that type of mandate. this is for the largest school districts in this state. they are not alone. tonight hillsboro implemented a simple mask. when they