I think they illegal part should be higher.

Reader George:

There are a record 61 million immigrants and their American-born children in the United States, including an estimated 15.7 million illegally here, according to a new analysis of 2015 U.S. Census data.

The estimated number of undocumented immigrants is one of the highest ever.

The analysis by the Center for Immigration Studies found that 45.3 million, or three-fourths of the 61 million, are legal immigrants and their children. The report out Monday notes that the so-called "Gang of Eight" immigration bill supported by GOP presidential candidate Sen. Marco Rubio would have doubled that number of legal immigrants.
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"These numbers raise profound questions that are seldom even asked: What number of immigrants can be assimilated? What is the absorption capacity of our schools, health care system, infrastructure, and labor market? What is the effect on the environment and quality of life from significantly increasing the nation's population density?" wrote Steven Camarota, the Center's director of Research.

"With 45 million legal immigrants and their young children already here, does it make sense to continue admitting more than one million new legal permanent immigrants every year?" he added.

His report found that the normal pattern of immigration to the United States changed after 1970. At that time, there were 13.5 million immigrants, or about one in 15 U.S. residents.

But since 2000, the number of immigrants has increased 18.4 million, and now nearly one of every five U.S. residents are immigrants.

"The number of immigrants and their young children grew six times faster than the nation's total population from 1970 to 2015 — 353 percent vs. 59 percent," he added.