Or just bring back the TSA air puffer machines (rev. 2), and say you're doing it to keep people safe from known terrorists with fake ID whose DNA you have on fi

Or just bring back the TSA air puffer machines (rev. 2), and say you're doing it to keep people safe from known terrorists with fake ID whose DNA you have on file. You'd have a full-population genetic database in no time, matched to identifying information, passport/license numbers, and travel history.