A federal judge in San Francisco is weighing whether the Trump administration violated federal law by sending National Guard troops to accompany federal agents on immigration raids in Southern California.

Three-day trial will determine if the government violated a 19th century law that bars the military from civil law enforcement

In 1992, President George W. Bush used the Insurrection Act to call in the National Guard after deadly rioting broke out in Los Angeles following the beating of Rodney King.

An armored National Guard vehicle collided with a civilian car on Capitol Hill on Wednesday morning as troops continued to take up positions around the city during President Donald Trump's crackdown on crime and immigration violations.

In New Mexico’s most populous city, National Guard troops are listening to the police dispatch calls, monitoring traffic cameras and helping to secure crime scene perimeters, tasks not usually part of the job.

The Trump administration is sending 2,000 National Guard troops to Los Angeles after two days of isolated clashes between federal immigration agents and protesters.

(Carlin Stiehl / Los Angeles Times) The Trump administration is sending 2,000 National Guard troops to Los Angeles after two days of isolated clashes between federal immigration agents and protesters.

The trial over President Trump's deployment of thousands of National Guard troops to Los Angeles earlier this summer reached its third and final day Wednesday.