After a series of immigration raids led to massive detentions of undocumented migrants in the US,  Washington prepares for the next big policy fight:  legal immigration.

According to The Atlantic, there is a risk that lawmakers embrace nationalist sentiments that seek to keep everyone out.

Such sentiments were a major reason why Rumana Ahmed, a Muslim woman who served on the National Security Council under Obama, chose to leave the White House eight days into Trump’s presidency.

"When Trump issued a ban on travelers from seven Muslim-majority countries and all Syrian refugees, I knew I could no longer stay and work for an administration that saw me and people like me not as fellow citizens, but as a threat," she said.

Here’s her story.