The troops that President Trump deployed to Los Angeles are members of a state-based militia that exists in every state and can be called in during natural disasters or civil unrest.

California lawmakers blasted President Trump for deploying 2,000 National Guard members to L.A. as a response to dayslong immigration protests. Democratic Senator Alex Padilla joined MSNBC's Ayman Mohyeldin,

President Trump and California Gov. Newsom clash over National Guard deployment amid L.A. riots, with differing views on the 1878 Posse Comitatus Act governing military use domestically

The governor said the decision was a "serious breach of state sovereignty" and demanded that the president "return control" to California.Start the day smarter. Get all the news you need in your inbox each morning.

Harris said the deployment is "part of the Trump Administration's cruel, calculated agenda to spread panic and division."

The Trump administration said it would send 2,000 National Guard troops into Los Angeles after a second day in which protesters confronted immigration agents during raids of local businesses.

Violent anti-ICE riots in Los Angeles prompt federal response after protesters attack Border Patrol agents with rocks, leading FBI and DHS officials to promise full prosecution.