Trump asks supreme court to allow order against birthright citizenship

Acting solicitor general Sarah Harris asks court to override district judges in Massachusetts, Maryland and Washington

• What is US birthright citizenship and what does Trump's executive order do?

Donald Trump's administration has asked the supreme court to allow his attempt at curtailing birthright citizenship to proceed.

On Thursday, the justice department's acting solicitor general, Sarah Harris, filed a request to the nation's highest court, asking it to restrict orders issued by district judges in three states - Massachusetts, Maryland and Washington - that blocked Trump's executive order on birthright citizenship restrictions.