- Fact check: How much does illegal immigration cost America? Not nearly as much as Trump claims. "Frankly absurd," said one immigration policy expert of Trump's false claims that illegal immigration costs the U.S. more than $200 billion per year. https://www.nbcnews.com/politics/donald-trump/fact-check-how-much-does-illegal-immigration-cost-america-not-n950981 3 comments politics