Republican senators are making moves to formally nullify President Biden’s recent vaccine mandate. Senator Mike Braun is leading the Republican effort to officially put an end to the rule by using the Congressional Review Act, the process used by Congress to eliminate a rule from the executive branch.

Fox News reports:

Republicans blasted the mandate, which Biden introduced in September, and the forthcoming formal rule from the Occupational Safety and Health Administration (OSHA), which is expected to be released in the coming days — calling it “unacceptable” and an order that “warrants review by Congress.”

Sen. Braun has already been joined by 40 other Republican Senators.

A Republican aide told Fox News that the remaining nine GOP senators — Sens. Mitch McConnell, Richard Shelby, Susan Collins, Roy Blunt, Lisa Murkowski, Mitt Romney, Bill Cassidy, Tim Scott and Rob Portman — are awaiting the formal filing of the OSHA rule. The aide said that there is no Republican opposition to the disapproval.

Braun, the top Republican on the Senate Subcommittee on Employment and Workplace Safety, which has jurisdiction over OSHA, slammed the Biden administration for “heavy-handed government,” saying the business world has taken the COVID-19 pandemic “seriously from the beginning to keep employees and customers safe.”

“Now, when we’re finally at kind of an equilibrium, you’re putting an ultimatum on them,” Braun, a businessman, told Fox News. “Either get the vaccine or lose your job.”

Republicans have called Biden’s mandate which forces businesses with over 100 workers to get the Covid-19 the “single biggest disruptor” to the business community.