Congress, led by Senate Majority Leader Mitch McConnell, has started to produce bills for President Donald Trump’s approval using a repeal process instituted by the 1996 Congressional Review Act (CRA). According to CQ Roll Call, the process could be used to undo as many as 40 rules and regulations that were put in place by the Obama administration before the former president left office.

Partner Sheila Harvey, who serves as Pillsbury’s Regulatory Department Chair, told CQ Roll Call that the use of the “sleeper statute” has garnered much attention among firm clients.

“Legally, it’s extremely interesting,” she said. “Clearly, it’s going to be a pretty massive effort to roll back rules.”

Washington, DC Energy associate Meghan Hammond said that the repeal process being used under the CRA has only recently become an option and courts had previously only reviewed a small portion of the act. Now, Pillsbury is following more than 24 CRA bills using the twitter handle @EyeonCRA, which the firm updates daily with news from Capitol Hill.

Harvey says the law hasn’t been tested significantly in court and may encounter legal challenges because of provisions that block judicial repeal of repeals under the act and a provision blocking future rules or regulations that are “substantially similar” to those that are repealed.

Read more about the CRA on CQ Roll Call (subscription required) and follow CRA Monitor on Twitter for daily updates.