 A Houston Police Department employee drowned after his car was submerged by floodwaters. Power outages continue throughout the Texas Gulf Coast. A triple-digit heat index is expected to hinder recovery efforts. Chris Fox for CBS News, Austin. A doctor specializing in Parkinson's disease has recently visited the White House multiple times, in fact. CBS's Ed O'Keefe had a testy exchange with White House Press Secretary Karine Jean-Pierre about the visits by neurologist Dr. Kevin Kennard.