On Wednesday, President Trump endorsed a bill by Sens. Tom Cotton, R-Ark., and David Perdue, R-Ga., that would dramatically reform the immigration system.

The bill, known as the “Reforming American Immigration for a Strong Economy Act,” seeks to halve the number of immigrants granted residency each year from 1 million to 500,000. The RAISE Act would also preference skilled worker immigrants before the family members of current U.S. residents. It would also eliminate a visa diversity system that would have granted 50,000 green cards next year.