U.S. President Donald Trump signed two executive orders on Thursday in a new but narrower attempt to curtail birthright citizenship, once again challenging a provision of the U.S. Constitution even though the Supreme Court rejected his previous effort.

Limiting birthright citizenship has been one of the top priorities in the Republican president¡¯s crackdown on immigration, with the White House taking particular aim at what it calls ¡°birth tourism,¡± in which pregnant foreign nationals?travel to the U.S. to give birth.

After his June ?30 setback in the Supreme Court, Trump called on the U.S.?Congress to act, but on Thursday he opted for executive orders, which set policy but do not carry ?the ?same weight as laws passed by Congress.