Justice Kagan blasted U.S. Solicitor General John Sauer on the birthright citizenship executive order— which she noted has yet to succeed in any federal court, including cases heard by Trump-appointed judges.

The U.S. Supreme Court wrestled on Thursday over Donald Trump's attempt to broadly enforce his executive order to restrict birthright citizenship, a move that would affect thousands of babies born each year as the Republican president seeks a major shift in how the U.