Lesser known than traditional ways of immigrating into the country like family or work ties, the program benefits up to 50,000 people per year from countries with lower levels of immigration to the US.
“The terrorist came into our country through what is called the ‘Diversity Visa Lottery Program,’ a Chuck Schumer beauty,” Trump tweeted on Wednesday. “I want merit based.”
The Diversity Immigrant Visa Program awards up to 50,000 individuals per year a visa for a green card, which bestows permanent residency in the US and is a path to citizenship.
Opponents of immigration complain that the program brings people to the US to compete for jobs, and even supporters of immigration acknowledge the program does not tailor applicants to needs in the US.
Visas are awarded by random selection in select countries to promote immigration from places that don’t otherwise send many immigrants to the US.
Roughly 1 million green cards are issued by the US per year. In 2016, 45,664 diversity visas were issued.
How does it work?
Individuals in countries that are determined by a formula to have a low enough level of immigration to the US can apply for the visas at certain times each year. Most of the lottery recipients live outside the US, but a few are in the US legally on other visas.
The visas are distributed further by regions: Africa, Asia, Europe, North America (other than Mexico), Oceania and South America, Mexico, Central America and the Caribbean.
The program is run by the State Department.
Recipients must have at least a high school education or equivalent and must have had at least two years of experience working a job that requires at least two years of training or experience within five years of the date of the application. They must also be admissible to the US — categories of inadmissibility to the US broadly include terrorism connections.
How did it get started?
The final bill pbaded the Senate 89-8 and the House 264-118.
Has Congress tried to change the program?
In 2013, Schumer helped author the Gang of Eight bill that pbaded the Senate by a wide margin, which would have replaced the program.
The Gang of Eight measure was the result of a bipartisan effort to secure comprehensive immigration reform and had included senators such as Florida Republican Marco Rubio and South Carolina Republican Lindsey Graham. The bill died in the House.
The bill would have moved the diversity visas elsewhere in the system and introduced a merit system that took into account multiple factors like family and work skills.
What is Trump proposing?
Republican Sens. Tom Cotton and David Perdue have introduced a bill, endorsed by Trump, that would eliminate the diversity lottery and certain categories of family-based green cards, and then would transform the remaining employment-based visas into a point system that favors heavily highly skilled, highly educated, English-speaking immigrants.
But while there is consensus around needing to reform the process, limited support exists even within the GOP for Cotton and Perdue’s bill.
The Cotton-Perdue bill would roughly halve the number of green cards overall per year, a point of contention for many Democrats and Republicans alike, and wouldn’t easily allow for low skilled immigrants to come to the US permanently, another sticking point for many.
CNN’s Dan Merica contributed to this report.