SAN FRANCISCO (AP) — A divided U.S. appeals court on Wednesday struck down a key part of President Donald Trump's contentious effort to crack down on cities and states that limit cooperation with immigration officials, saying an executive order threatening to cut funding for "sanctuary cities" was unconstitutional.

In a 2-1 decision, the 9th U.S. Circuit Court of Appeals agreed with a lower court that the order exceeded the president's authority. Congress alone controls spending under the U.S. Constitution, and presidents do not have the power to withhold funding it approves to pursue their po...