More than one in five foreign nationals entering the United States by family-sponsored chain migration is 50-years-old or older, imposing massive costs for elderly care on innocent working Americans.

Recent data by the Center for Immigration Studies’ Director of Policy Jessica Vaughan reveals how the current U.S. legal immigration system — where more than 70 percent of the system is based on new arrivals bringing in their foreign relatives, known as chain migration — is importing elderly foreign nationals.

In the 1980’s, about 17 percent of foreign nationals who entered the U.S. through family-sponsored chain migration were 50-years-old or older. Today, the rate of soon-to-be elderly and elderly chain migrants coming to the U.S. is far higher.

More than one in five, or about 21 percent, of foreign nationals who come to the U.S. through family-sponsored chain migration are 50-years-old or older, Vaughan discovered, amounting to millions of elderly immigrants arriving in the U.S.

“This trend has implications for the fiscal consequences of immigration,” Vaughan said in her report.

Family-based chain migration is the leading reason for legal immigration levels to the U.S. rising over the last five decades. As Breitbart News reported, immigrants coming from countries like Mexico, Guatemala, and El Salvador have a tendency to bring between three to six relatives with them to the U.S. once they are granted citizenship.

President Trump has slammed chain migration as a “disaster” because it blindly brings foreign nationals to the U.S. based on their relation to a naturalized U.S. citizen, rather than based on their merits, English proficiency, and skills.

“I don’t think any Republican would vote for anything having to do with leaving chain migration,” Trump said in a previous interview with Fox News’ Laura Ingraham. “Chain migration is a disaster for this country and it’s horrible.”

Every year, more than 1.5 million illegal and legal immigrants are admitted to the U.S., with the current foreign-born population booming to an unprecedented high of roughly 44 million individuals. Mass immigration to the U.S. has been at the expense of American workers in the working and middle-class who have been forced to compete with foreign labor while their wages have remained stagnant.

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