There have been some harrowing reports about foreign nationals detained and deported amid Trump’s immigration crackdown. Here’s what we know.

Recently, green-card and visa holders have been facing tougher scrutiny at airports. Immigration attorneys give tips on how reduce the chances of running into problems while traveling.

According to the US government, Khalil failed to mention on his green card application that he previously worked for the British Embassy's Syria office in Beirut and was a member of the United Nations Relief and Works Agency for Palestine Refugees in the Near East.