A coalition of 16 US states led by California is suing President Donald Trump's administration over his decision to declare an emergency to raise funds for a Mexican border wall.
The lawsuit was filed in the court for the Northern District of California.
It comes days after Mr Trump invoked emergency powers to bypass Congress and secure funding for the project – a key campaign pledge.
Democrats have vowed to contest it "using every remedy available".
For details: https://bbc.in/2X3ppeS