Mullin's comments on NBC's "Meet the Press" came in response to questions about a U.S. Supreme Court decision on Friday that paved the way for President Donald Trump's executive order restricting birthright citizenship to go into effect soon in some states. The court's ruling did not address the legality of Trump's order, which would upend the historic practice of granting U.S. citizenship to anyone born in the country regardless of their parents' immigration status.