California Attorney General Xavier Becerra plans to announce a lawsuit Wednesday that will challenge President Trump’s proposal to build a wall at the U.S.-Mexico border, a project Becerra has called “medieval.” Becerra is scheduled to travel to Border Field State Park near San Diego to announce plans to sue over construction of border wall projects in San Diego and Imperial counties, the Los Angeles Times reports. The lawsuit alleges that the Trump administration has failed to comply with federal and state environmental laws, relied on federal statutes that don’t authorize the proposed projects and violated the U.S. Constitution’s separation-of-powers doctrine.
The lawsuit also says the Department of Homeland Security decided to build the walls without complying with the Clean Water Act and the National Environmental Policy Act. As a result, the lawsuit alleges that the federal government lacks proper environmental analysis of the impact of 400-foot prototypes of the wall currently planned, as well as the 2,000-mile-long final wall. It is the latest of more than two dozen lawsuits and legal briefs filed against the Trump administration by Becerra, who was appointed attorney general in January and is running for election to the post next year. He previously sued to challenge Trump’s plans to end a program that protects young immigrants from deportation, ban immigration from some countries and roll back environmental laws. Last week, three advocacy groups sued the federal government to block construction of a border wall, alleging that the Trump administration overstepped its authority by waiving environmental reviews and other laws.