If they start locking up everyone who Bristol County Sheriff Tom “Lock’em Up’’ Hodgson says goes too easy on illegal immigrants, there won’t be any room to lock up all those illegal immigrants he wants to lock up.

But, then, details have never been Lock’em Up’s strong suit.

Lock’em Up got a lot of attention this week when he appeared before a congressional subcommittee and advocated locking up any public official who stands in the way of locking up illegal immigrants.

If you follow Lock’em Up’s reasoning to its logical conclusion, that would mean locking up hundreds if not thousands of officials who work in cities and towns where the cops don’t act as surrogate federal immigration agents. You’d have to lock up the cops, too.

That’s a lot of locking up.

Lock’em Up spent most of this week in Washington, much of it giving interviews about locking people up.

One of his aides told me they spent more time in the Fox News studio than their hotel.

And he meant that as a good thing.

Lock’em Up appeared on Bill O’Reilly’s show one night and “Fox & Friends’’ Thursday morning. And that’s awesome, because the president watches “Fox & Friends.’’ No fake news for him.

Lock’em Up is quickly becoming Fox News’ second favorite sheriff. He has a ways to go, however, to catch up with Milwaukee County Sheriff David Clarke. Fox viewers love Clarke, who is black and routinely denounces Black Lives Matter and Al Sharpton and Beyoncé. And sometimes he wears a cowboy hat.

Still, with his banner week Lock’em Up is giving Clarke a run for his money. This week was almost as good as that week in January when Lock’em Up offered Bristol County inmates to serve on a chain gang to build President Trump’s wall with Mexico.

Personally, I think instead of locking up Boston Mayor Marty Walsh, Lock’em Up should make Marty part of that chain gang. Before he was a politician, Marty was a card-carrying member of Local 223 of the Laborers union. Marty would be an absolute waste of space sitting in the can, but he knows how to build a wall.

Then there’s Dan Rivera, the mayor of Lawrence. I know Dan Rivera. I like Dan Rivera. But Dan Rivera is a very fussy eater and would drive the prison chef crazy. For that reason alone, I would strongly recommend not locking up Dan Rivera.

After Lock’em Up suggested Somerville Mayor Joe Curtatone should be locked up, Curtatone dismissed him as a “jack-booted thug.’’ But Lock’em Up told me he doesn’t own a pair of jackboots. He wore a pair of sensible dress shoes to a Thursday meeting with Attorney General Jeff Sessions, where he urged the nation’s top law enforcement officer to start locking up people who preside over sanctuary cities.

Look, the overwhelming majority of immigrants living here without legal status are not criminals. And locking up and deporting millions of people whose only offense is their residency status is unrealistic and would take up space and resources better reserved for real criminal immigrants.

There have been high-profile cases of American citizens being killed by illegal immigrants, including the murder in New Bedford last year of Sabrina DaSilva, allegedly by her twice-deported father, a case that Lock’em Up told the congressional subcommittee about. That’s a legitimate issue.

But the real criminals in immigrant communities target other immigrants far more often than they do American citizens. Police need law-abiding immigrants to identify the real criminals, and that won’t happen if the cops start asking law-abiding immigrants for their residency status and turning them over to the feds.

That’s the real world where real cops in Boston and Chelsea and Lawrence lock up real criminals every day.

“People,’’ Lock’em Up Hodgson told me, “are tired of elected officials saying they can violate the law.’’

That’s not all they’re tired of.

Kevin Cullen is a Globe columnist. He can be reached at cullen@globe.com