The question has been asked whether any members of Congress have opposed Biden's vaccine mandates. The answer is yes. 47 Republican senators and 136 House members filed an amicus brief asking the Supreme Court to block enforcement of President Biden's OSHA vaccine mandate (OSHA).

Congressional Republicans tell Supreme Court to block Biden's 'health police' vaccine mandate https://www.foxnews.com/politics/supreme-court-stefanik-braun-covid-vaccine-mandate