As a contentious legal battle on health care plays out on the national stage, an alumnus will be one of the star players.

Michael Carvin, a 1982 graduate of the GW Law School, is one of two lawyers challenging the constitutionality of the individual mandate included in the Affordable Care Act in front of the Supreme Court this week, the Washington Post reported.

He will represent the National Federation of Independent Businesses, which is fighting the law’s mandate for individuals to buy health insurance or face fines. Paul Clement, a former solicitor general, will represent the 26 states also calling the law into question.

The alumnus was also one of the lead lawyers during the 2000 recount battle in Florida, arguing in front of the Supreme Court on behalf of President George W. Bush.

He previously served as the deputy assistant attorney general for the U.S. Justice Department.