Tlaib, dubbed part of a liberal "Squad" of freshman congresswomen who have relentlessly criticized Trump's handling of the coronavirus pandemic, lashed out on Twitter.
"He still won't wear a mask. He only cares about himself and his life, NOT those around him or the people he took an oath to protect. Too many lives lost because of his deadly lies," Tlaib wrote.
Her comments come just days after Trump, during the first presidential debate, mocked Democratic nominee Joe Biden for wearing a mask constantly to help stop the spread of the virus, which has killed over 200,000 Americans.