Republicans in the House of Representatives hired a GW law professor to sue President Barack Obama for alleged abuse of executive power.

Jonathan Turley, a professor of constitutional law at the GW Law School, is the third lawyer to be hired by Speaker John Boehner to lead the lawsuit against Obama, Politico reported Tuesday. Turley will challenge Obama’s delay of the Affordable Care Act provision that requires employers to provide healthcare to their workers.

The other lawyers both dropped the case.

In a blog post published Monday, Turley wrote that “unchecked Executive action is precisely the danger that the Framers sought to avoid in our constitutional system.”

“Without judicial review of unconstitutional actions by the Executive, the trend toward a dominant presidential model of government will continue in this country in direct conflict with the original design and guarantees of our Constitution,” he said.

This marks the second time Turley has attempted to bring Obama to court. He sued the president in 2011, arguing that Obama failed to seek congressional authorization to send troops to Libya. The case was thrown out in federal court.