Washington, Jan. 23 -- Donald Trump signed as many as 80 executive orders after he took oath as the 47th President. Executive orders are a key tool for any US president wanting to make their mark on government policy.

In one of his first acts as the new president, Trump signed an executive order aimed at ending "birthright citizenship" - meaning the automatic American citizenship that is granted to anyone born in the country. It's a policy change he's long promised.

This order aims to end birthright citizenship for children born in the US to immigrant parents who are in the country illegally, as well as those born to parents who are in the country on a temporary basis. There have been reports that the administration will enforce the or...