AUSTIN, Texas: Protests that sprang up in Los Angeles over immigration enforcement raids and prompted President Donald Trump to mobilize National Guard troops and Marines have begun to spread across the country, with more planned into the weekend. From Seattle and Austin to Chicago and Washington, D.C., marchers have chanted slogans, carried signs against the Immigration and Customs Enforcement agency and snarled traffic through downtown avenues and outside federal offices.

They city sees a second day of clashes over raids by federal agents on undocumented migrants.

Federal immigration officials squared off with protesters in Los Angeles County on Saturday using tear gas and flash-bang grenades. The unrest comes just a day after raids were…