The U.S. Supreme Court is poised on Thursday to consider Donald Trump's attempt to broadly enforce his executive order to limit 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.

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."

As the Supreme Court takes up birthright citizenship, a new poll finds that less than a third of Americans want it to end. But other parts of the White House's immigration crackdown are more popular.