WASHINGTON (Reuters) - A coalition of 16 U.S. states led by California sued President Donald Trump's administration on Monday over his decision to declare a national emergency to obtain funds for building a wall along the U.S.-Mexico border.

The lawsuit filed in U.S. District Court for the Northern District of California came just days after Trump invoked emergency powers on Friday after Congress declined to fulfill his request for $5.7 billion to help build the wall that was his signature 2016 campaign promise. His move aims to let him spend money appropriated by Congress for other purposes.