It certainly is a true (and extremely misleading) statement – illegal immigrants paid approximately $12 billion in taxes last year. While the average person may hear "$12 billion" and think "that's a lot!," its pennies in the context of a federal government that will spend over $12 billion per day this year.

In fact, if all Americans paid taxes at the same rate illegal aliens did, the budget deficit would be at least quadruple what it is now. According to prior estimates of mine based off the size of the 2017 labor force,  if we were to replace the entire labor force with illegal immigrants and have them pay all their taxes (including state and local) to the feds, the federal government would've collected approximately $240 billion in tax revenue in 2017, as opposed to the $3.3 trillion that the Federal government actually collected.

And that doesn't even take into account the fact that the jobs illegals take would otherwise be filled by taxpaying Americans, 100% of which would be paying taxes, and likely at higher wages. One recent study found illegals impose a $30 billion annual cost in lost tax revenue, three times what they pay. In other words, illegals create a net $18 billion hole in paying their $10 billion in taxes.