In an interview on the evening of June 8, California Governor Gavin Newsom said that the lawsuit was aimed at President Trump's federal transformation of California's National Guard without state consent, a rare move in US history.
"Mr. Donald Trump has made the situation worse. He was the one who set the spark, the one who poured more fuel into the fire, since announcing the occupation of the National Guard, an illegal, unethical and unconstitutional act," said Mr. Newsom.
The California governor stressed that the state would prove the legality of President Trump's move by filing a lawsuit on June 9.
He pointed out that under President Trump's executive decree, there are clear regulations on coordination with state governors. However, this coordination has never happened.
Mr. Newsom noted that he himself has deployed the National Guard to respond to many different emergency situations. He emphasized that there is no need to object to cooperation in the system to support each other between law enforcement agencies, but there must be processes and procedures.
The Trump administration has previously ordered the deployment of 2,000 California Coast Guard men to Los Angeles to curb immigration protests.
About 300 members of the San Diego-based California National Guard's 79th Infantry Brigade arrived in the Los Angeles area on the morning of June 8 to protect staff and the US Department of Homeland Security building at three locations, according to the US Northern Command.
The last time a president summoned a National Guard without the cooperation of a state governor was in 1965, when President Lyndon B. Johnson ordered the army to protect civil rights protests in Alabama.