Detainees who answer yes get a follow-up question: did they vote by mail or in person.
What we’re less sure of4 of 4 claims
Medium
ICE officers ask people they arrest whether they have ever voted illegally.
The story's opening credit names The Washington Post as the source. Only the two Post links carry this fact. The other sources (ICE statistics, 18 U.S.C. §611, Brennan Center, Census, ProPublica, AP) give background on noncitizen voting, not this questioning practice.
Medium
Detainees who answer yes are asked a follow-up question: whether they voted by mail or in person.
Comes from The Washington Post's reporting, which the story credits. No other listed source confirms the follow-up question.
Medium
The questioning is a new practice ('now'), adopted in the run-up to the election.
The headline says 'now', and the Washington Post article's URL frames this as the 'run-up' to the election. The story does not say when the practice began. It gives no confirmation from ICE or DHS.
Low
The question is put to people ICE arrests in general, not to a targeted subset.
This scope comes from the desk's wording 'people they arrest', with no figure or official policy document cited. The Post may describe a narrower or less uniform practice. The ICE statistics page in the sources does not cover this.