The other example was the first workplace immigration raid of the Obama administration, late last month in Bellingham, Wash. More than two dozen people were arrested at a family-run company that rebuilds car engines. They were charged with the usual paperwork offenses. The company said it was blindsided, and so was Ms. Napolitano. She said she had not known about the raid in advance and promised an investigation.

The point:

...scattershot raids and rampaging sheriffs are not the answer. The idea that enforcement alone will eliminate the underground economy is a great delusion. It runs up against the impossible arithmetic of mass expulsion — no conceivable regime of raids will wrench 12 million illegal immigrants from their jobs and homes.

Thousands marched against Arpaio this past Saturday.

Memo from the Times to Obama and Napolitano:

Are Mr. Obama and Ms. Napolitano in charge or not? Let them show it by ending the raids and Sheriff Arpaio’s abuses. Something has to be done about immigration, but it has to be smarter than this.