Maj. Gen. Scott Sherman said 500 National Guard members have been trained to accompany agents on immigration operations.

The lawsuit will seek to set aside the president’s order calling up troops in response to protests that spread over the weekend.

The protests began Friday after Immigration and Customs Enforcement agents carried out coordinated raids across Los Angeles, detaining dozens of workers at warehouses and other worksites. The arrests sparked immediate backlash, with demonstrators converging outside federal buildings, blocking freeways, and in some cases clashing with police.

The California National Guard is conducting training on civil unrest in Los Alamitos, California, following several days of protests against immigration raids in Los Angeles.