CNN US

There are still roughly 700 children who were separated from their parents at the border and have not been reunified with those parents by the Trump administration, as new court filings reveal the slow pace of reuniting the trickiest family separation cases.

Friday's news that Sen. John McCain was ending medical treatment for an aggressive brain cancer shook Capitol Hill, a place where McCain's legacy looms large, and the larger political world, where the senior senator from Arizona is seen as an integral voice on everything from America's defense posture to the future of immigration.