Senate Republicans, including Senate Minority Leader Mitch McConnell, R-Ky., will introduce a bill Tuesday designed to halt a proposed IRS rule that would entrench the policies that led to the targeting of conservative groups.

The bill would delay for one year the rules, which would limit the amount of political activities that “social welfare organizations,” or 501(c)4 groups, could engage in and still maintain a tax-exempt status.

“Instead of putting safeguards in place to protect our civil liberties, the Obama administration is now dragging the IRS back in the opposite direction,” McConnell said on the Senate floor. “It’s now pushing a regulation that would actually entrench and encourage the harassment of groups that dare to speak up and engage in the conversation.”

McConnell, along with Sens. Jeff Flake of Arizona, Orrin Hatch of Utah and others, introduced the legislation to “prevent the IRS from enacting regulations that would permit the suppression of First Amendment rights.”

McConnell also said that liberal groups should be just as concerned about the proposed rules as conservative groups are because in the future, the rules could be used against them as they are against conservatives today.

The House Ways and Means Committee will mark up companion legislation Tuesday and Chairman Dave Camp, R-Mich., plans to bring that bill for a vote by the end of the month.