A federal judge questions the Trump administration on implementation plans for controversial birthright citizenship executive order as advocacy groups file class action lawsuits in response.

Two Maryland advocacy groups are challenging President Trump's executive order that aims to deny birthright citizenship to certain U.S.-born children of undocumented immigrants.

President Donald Trump's administration will not deport children deemed ineligible for U.S. citizenship until his executive order curtailing birthright citizenship takes effect on July 27, a government lawyer said on Monday after being pressed by two federal judges.