The Yehudah Project: Protecting America from both Terrorist inside and outside!

Washington (CNN)When President Donald Trump declared at the Pentagon Friday he was enacting strict new measures to prevent domestic terror attacks, there were few within his government who knew exactly what he meant.

Administration officials weren't immediately sure which countries' citizens would be barred from entering the United States. The Department of Homeland Security was left making a legal analysis on the order after Trump signed it. A Border Patrol agent, confronted with arriving refugees, referred questions only to the President himself, according to court filings.

Trump's immigration order: Which countries are affected?

• Iran
• Iraq
• Syria
• Sudan
• Libya
• Yemen
• Somalia

Saturday night, a federal judge granted an emergency stay for citizens of the affected countries who had already arrived in the US and those who are in transit and hold valid visas, ruling they can legally enter the US. Trump's unilateral moves, which have drawn the ire of human rights groups and prompted protests at US airports, reflect the President's desire to quickly make good on his campaign promises. But they also encapsulate the pitfalls of an administration largely operated by officials with scant federal experience.