The Trump administration’s mass-deportation offensive expanded into Los Angeles Saturday with pre-dawn roundups, part of a West Coast operation expected to run seven days a week, sources told The Post.

State and local leaders across the country are bracing for a tidal wave of aggressive immigration policies and possible mass deportations that President Donald Trump has vowed to enact in the hours and days following his inauguration Monday.

President Trump released a flurry of immigration actions this week, signing a series of orders targeting the border and ramping up enforcement. While Trump has long pledged to address illegal immigration,