More than 88 percent of non-citizen federal convicts who were sentenced last year are illegal aliens who had been living in the United States, a newly released Department of Justice (DOJ) report finds.

Nearly 30,000 non-citizens were sentenced last year for a myriad of federal crimes, data compiled by the United States Sentencing Commission (USSC) reveals, making up nearly 43 percent of all convicts who were sentenced between October 1, 2017, and September 30, 2018.

Of these nearly 30,000 non-citizen federal convicts sentenced last year, about 8-in-9 are illegal aliens who had been living in the U.S. after either crossing the U.S.-Mexico border or overstaying a visa.

About 8.6 percent of all non-citizen federal convicts sentenced last year were legal immigrants. Illegal aliens made up a majority of the non-citizens sentenced for a number of federal crimes last year.

For example, nearly 64 percent of the non-citizens convicted for drug trafficking last year were illegal aliens. More than 70 percent of the non-citizens convicted for kidnapping last year were illegal aliens.

Illegal aliens also accounted for almost 60 percent of the non-citizens convicted for murder last year and more than 85 percent of the non-citizens convicted for sex crimes in 2018. About 50 percent of the non-citizens convicted of manslaughter last year were legal immigrants while the other half were illegal aliens.

As Breitbart News reported, about 1-in-4 federal inmates in the U.S. prison system were foreign-born. The foreign-born federal prison population costs American taxpayers about $1.42 billion every year, according to a 2018 report by the Government Accountability Office (GAO).

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