The United States is home to nearly 20 percent of the globe’s migrant population, a new study finds.

The Pew Research Center reveals in a new study that the U.S. has admitted more foreign nationals than any other country in the world. Roughly 18 percent of the world’s migrant population lives in the U.S., the study found.

About 44.5 million foreign-born residents now live in the U.S., far surpassing Germany’s 12.2 million foreign-born population and Russia’s nearly 12 million foreign-born population.

In total, the U.S. is home to more foreign-born residents than Germany, Russia, the United Kingdom, and France combined. The 44.5 million foreign-born population living in the country marks a nearly 108-year record high of immigration to the U.S.

That 44.5 million includes roughly 22 million naturalized citizens, 11 million other residents — including more than 1.5 million foreign temporary visa-workers — plus about 11 million illegal aliens.

The last time the U.S. foreign-born population was this high was in 1910 when immigrants made up 14.7 percent of the total country’s population.

Mass immigration has come at the expense of America’s working and middle class, which has suffered from poor job growth, stagnant wages, and increased public costs to offset the importation of millions of low-skilled foreign nationals.

Four million young Americans enter the workforce every year, but their job opportunities are further diminished as the U.S. imports roughly two new foreign workers for every four American workers who enter the workforce. Even though researchers say 30 percent of the workforce could lose their jobs due to automation by 2030, the U.S. has not stopped importing more than a million foreign nationals every year.

For blue-collar American workers, mass immigration has not only kept wages down but in many cases decreased wages, as Breitbart News reported. Meanwhile, the U.S. continues importing more foreign nationals with whom working-class Americans are forced to compete.

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