A new proposal to reshape the U.S. Court of Appeals for the Ninth Circuit, the nation’s largest and busiest federal appellate court, is set for a markup hearing before the House Judiciary Committee on Thursday morning.

The bill, introduced Monday by Rep. Darrell Issa, proposes dividing the Ninth Circuit into three regionally based divisions—a Northern Division composed of the district courts in Alaska, Idaho, Montana, Oregon and Washington’s Eastern and Western districts of Washington; a Middle Division made up of the courts in Guam, Hawaii, Nevada and the Northern Mariana Islands, as well as California’s Eastern and Northern districts; and a Southern Division including Arizona and the Southern and Central districts of California.