When President Donald Trump’s issued a proclamation on Wednesday evening that citizens from Afghanistan, along with 11 other nations, would be blocked from coming to the United States, it added even more fear,

U.S. President Donald Trump's order banning citizens of 12 countries from entering the United States goes into effect at 12:01 am ET (0401 GMT) on Monday, a move the president promulgated to protect the country from "foreign terrorists.

Here is a closer look at why the administration says it is instituting full bans on foreign nationals traveling to the U.S. from 12 nations.