What We’re Following

Immigration Nation: The Trump administration is proposing changes to the 1965 Immigration Act that critics say could make the country less diverse, but the history of that legislation illustrates how hard it is to predict the results of immigration policy. The president also wants to hire 500 new Border Patrol agents next year, but—as the comedian John Oliver pointed out in a segment based on Atlantic reporting—a high level of corruption within the agency means the plan comes with serious risks.

The State Department announced on Friday that the U.S. will related to the Paris agreement, honoring the departure rules of the original treaty—even though the country plans to formally withdraw as soon as possible. Meanwhile, geoengineering researchers are considering a plan to —something they say is close to being feasible, though they’re not yet sure of the repercussions.