Senior U.S. District Court Judge Charles R. Breyer said he was “trying to figure out where the lines are drawn.”

California Gov. Gavin Newsom had a brief victory in his lawsuit against President Trump, but an appeals court quickly blocked a federal judge's order.

A federal appeals court late Thursday paused a ruling that required President Donald Trump to return control of members of California’s National Guard to the state.

What the judge rules, and the likely appeals that follow, may alter decades of understanding about the roles of governors and the White House in quelling domestic unrest.

California Gov. Gavin Newsom (D) is meeting the moment, Democrats say. Amid the growing storm over the Trump administration’s response to protests of Immigration and Customs Enforcement (ICE) raids, which hit a new crescendo Thursday when officials put Sen.

Trump also revoked two other Biden-era waivers from California Thursday. Those would have allowed California to require vehicle makers to produce an increasing number of zero-emission heavy-duty trucks, and another to reduce nitrogen oxides, a component of smog, from heavy-duty highway and off-road vehicles and engines.

U.S. Sen. Alex Padilla, D-Calif., was unable to get off his a question for Secretary Kristi Noem when officials shoved him out of the room as he screamed “hands off!”. In this Nov. 2, 2018, file photo, then-California Secretary of State Padilla speaks in San Francisco. (AP Photo/Eric Risberg, File) AP

President Donald Trump has quashed California’s electronic vehicle mandate, accusing Gavin Newsom of trying to “kill” the auto industry and setting off another legal battle with the Democratic governor.