Now that U.S. Rep. John Katko, his party and his party's president seem committed to end Delayed Action for Childhood Arrivals (DACA) and deport productive, tax-paying young and middle aged adults because they came here as children illegally, I have some questions about the mechanics of his plan. With almost 800,000 of these people, how will he decide the order of deportation?

I suspect he'll want to get U.S. veterans out of here as they leave Iraq and Afghanistan and Niger because they would probably be the most vocal in opposition. And getting them out quickly would blunt supporters of the military. There might only be a thousand of them and perhaps no one will notice.

Should teachers and doctors and lawyers go next? If they can relearn the native language of their birthplaces, they can certainly help those countries to which they return. But they take productive careers, training, and about $460 billion in commerce with them over the next 10 years. Maybe Mr. Katko will want to hold off on that.

Graduate and undergraduate students? Does he think they can better use the skills and ideas they learned here to serve the countries of which they have no recollection? The ones they left at age 2 or 3 or 7? Since a majority of dreamers come from Mexico, it probably makes good sense to send that American-acquired skill back to Mexico to close their own teacher shortage, to cure the sick, to increase research and manufacturing. With the current pace in borrowing by this Congress though, we will probably miss that $460 billion. If the students leave without paying their student loans, do they still have to pay?

There's been talk about why these foreigners didn't tell their parents, "No! I'm not going! It's illegal." What does Mr. Katko think the cutoff age should be for that rationale? Age 3 maybe? Age 5 or 7? Probably not more than 9. By the time you're 10, you ought to know right from wrong.

Of course, we don't have to worry about high school dropouts. You need a diploma to qualify for DACA. So the percentage of high school dropouts is zero. Zero. And what if you have children here who are citizens-or grandchildren? You've been here for 20 or 30 years. What then?

Who's next, Mr. Katko?

Harris Lindenfeld