In the brief, lawmakers asked the Supreme Court to reconsider and, if appropriate, overrule Roe v. Wade, the key 1973 case in which the court determined the right to an abortion to be constitutional.

Lipinski, D-Western Springs, has long been open about his anti-abortion stance. In a statement to The Herald-News, he said he signed onto the brief because, "I agree with the intention of the law."

"This is not an 'undue burden,'" Lipinski said.