The policy, colloquially known as the “Muslim ban,” first went into effect in January 2017 and became one of Trump’s signature immigration policiesTrump expanded the ban last February to include additional restrictions on citizens of six more countries: Myanmar, Eritrea, Kyrgyzstan, Nigeria, Sudan, and Tanzania. While they could still visit the US, citizens of these countries were, for the most part, barred from settling in the US permanently.

Ending the ban was one of Biden’s topline campaign promises on immigration policy — and he is about to deliver. But this executive order only marks the beginning of a project to erase Trump’s influence on the immigration system, which was primarily concerned with keeping people out through a vast network of executive orders, policy memos, and regulatory changes