Standing amid a throng of fellow protesters outside th Thursday morning, Young Woon Han was worried about his future son or daughter.

The Supreme Court heard oral arguments on Thursday in cases challenging an executive order President Donald Trump signed purporting to limit who is entitled to birthright citizenship. Follow here for the latest live news updates.

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.

Protesters supported birthright citizenship at the San Jose, Calif., U.S. Citizenship and Immigration Services and Immigration and Customs Enforcement offices on Thursday.

FOX News contributor and GWU law professor Jonathan Turley reacts to the Supreme Court taking on the birthright citizenship case. MARTHA MACCALLUM, FOX NEWS: So the discussions that have gone on in the Supreme Court today,

Norman Wong, whose great-grandfather brought the landmark case that enshrined birthright citizenship, says the new fight over the issue is "for the soul of our country."