Sheltering unaccompanied minors who crossed the United States-Mexico border cost American taxpayers more than $1 billion last year, a new report reveals.

In 2017, a total of $1.4 billion in taxpayer money was spent on housing unaccompanied minors and keeping them comfortable, the Washington Times‘ Stephen Dinan reports. Each unaccompanied minor costs taxpayers $670 each day.

As Breitbart News reported, more than 13,000 unaccompanied minors were resettled across the country in Fiscal Year 2018, with less than four percent of unaccompanied minors being deported.

The rise of the Unaccompanied Alien Children (UAC) program has coincided with a massive rise in MS-13 gang violence. For example, most recently Breitbart News reported how nearly 100 MS-13 gang members have been arrested and found to have used the UAC program to enter the U.S.

Currently, the U.S. admits more than 1.5 million legal and illegal immigrants every year, with more than 70 percent coming to the country through the process known as “chain migration,” whereby newly naturalized citizens can bring an unlimited number of foreign relatives to the U.S. In the next 20 years, the current U.S. legal immigration system is on track to import roughly 15 million new foreign born voters. Between seven and eight million of those foreign born voters will arrive in the U.S. through chain migration.

John Binder is a reporter for Breitbart News. Follow him on Twitter at @JxhnBinder.