As Donald Trump faces the first legal challenge to one of his Day One executive orders, Sky’s US correspondents Mark Stone, Martha Kelner and James Matthews look at why ending birthright citizenship might be harder to achieve than he had hoped.  

Plus, James speaks to Stewart Rhodes, head of the far-right militia group the Oath Keepers. Rhodes was imprisoned as an architect of the January 6th riots, and chose to spend his first day of freedom back at the Capitol Building. 
 
Producer: Rosie Gillott      
Editor: Philly Beaumont