Claim: "We have over a million  a year, more than at any time in the history of this country. We have the largest percentage of immigrants, almost tied now with the historical high as a percentage of immigrants living in this country."
Fact-check: Has legal immigration hit a record high, as Santorum said?
Verdict: half-true
Organisation: PolitiFact
Author: Manuela Tobias
Date published: 2017-09-06T00:00:00