Former New Jersey Governor Chris Christie supports getting the COVID-19 vaccine, but he thinks President Joe Biden's new mandate for private employers is "on shaky ground" legally. "Working for the government and ordering government workers to have a mandate, there is one thing," Christie said Sunday on ABC's "This Week with George Stephanopoulos." "Extending that to two-thirds of all the jobs and make it either get vaccinated or not, it's also contradictory logically," Christie said.