White House chief of staff Ron Klain said Sunday that he felt “confident” that the courts would uphold the coronavirus vaccine mandate for businesses.The Biden administration previously announced that a federal vaccine mandate would be issued through the Occupational Safety and Health Administration, requiring private companies with at least 100 employees to mandate that their employees get vaccinated or undergo weekly testing.But on Saturday, the U.S. Court of Appeals for the Fifth Circuit issued a stay on the mandate following a lawsuit from Texas Attorney General Ken Paxton, temporarily freezing the federal requirement in a number of states, including Texas, Louisiana, Mississippi, Utah and South Carolina. The mandate, which Paxton argued was unconstitutional and exceeded OSHA’s limited power and responsibilities, was initially set to take effect Jan. 4.Klain spoke to host Chuck Todd on NBC’s “Meet the Press” Sunday about the c …