White House graphic claims illegal immigrant population down "2.3 MILLION+"

“The illegal immigrant population is collapsing.”
“2.3 MILLION+ ILLEGAL IMMIGRANT POPULATION DECLINE”
“SINCE PRESIDENT TRUMP TOOK OFFICE”
Official post · not independently verified
Our summary
The White House posted: "The illegal immigrant population is collapsing." The attached graphic reads "2.3 MILLION+ ILLEGAL IMMIGRANT POPULATION DECLINE" and "SINCE PRESIDENT TRUMP TOOK OFFICE" (per image text). This is the White House's figure; the post cites no source.