New data has come out regarding the number of immigrants let into the U.S. under the “diversity visa” program, revealing that nearly 5 million immigrants — more than 300 percent higher than promised — have entered the United States through the controversial lottery system.

Promoted by Democratic Sen. Chuck Schumer, the immigrant “lottery” program made headlines last week when it was discovered that the New York City terror attack on Halloween was perpetrated by a terrorist from Uzbekistan, who entered the U.S. under the visa lottery in 2010.

Since 1994, roughly 1.1 million foreigners have or are slated to receive the visa in a lottery at a rate of around 50,000 a year. As if that weren’t bad enough, a loophole in the system allows them to bring in family members in a practice known as “chain migration.” This means that for every lottery winner, an average of 3.45 additional immigrants will come to the U.S., according to the Center for Immigration Studies.

“When accounting for chain migration, the visa lottery may have brought in more than 3.8 million people in total since 1994. Despite its supporters’ assurances that the visa lottery is responsible for only 50,000 immigrants in any given year, chain migration means that the program actually accounts for perhaps 165,000 new immigrants per year because of earlier lottery winners sponsoring their relatives,” said the report.

There are few requirements — other than luck — to receive the diversity visa.

President Trump in a tweet noted that Schumer, the Senate minority leader from New York, pushed the program.

Schumer defended the program in a 2006 Senate speech in which he said, “My city of New York has dramatically benefited from this program…,” according to a report in the Washington Examiner.

The CIS report explained how the lottery system works:

The Immigration Act of 1990 permanently established the Diversity Visa category. The program benefits individuals from nations that send relatively few immigrants to the United States. Eligibility is straightforward: One needs only a high-school education or two years of work experience in certain jobs to qualify. Millions of people apply every year for the 50,000 green cards distributed by lottery, which does not take age, skills, language ability, or connection to the United States into account.

President Trump has promised to put an end to the diversity visa program.