It looks like Mitt Romney’s self-deportation immigration reform plan is working out better than anyone expected.

More Mexican immigrants have returned to Mexico from the U.S. than have migrated here since the end of the Great Recession, according to a new Pew Research Center analysis of newly available government data from both countries. The same data sources also show the overall flow of Mexican immigrants between the two countries is at its smallest since the 1990s, mostly due to a drop in the number of Mexican immigrants coming to the U.S.

From 2009 to 2014, 1 million Mexicans and their families (including U.S.-born children) left the U.S. for Mexico, according to data from the 2014 Mexican National Survey of Demographic Dynamics (ENADID). U.S. census data for the same period show an estimated 870,000 Mexican nationals left Mexico to come to the U.S., a smaller number than the flow of families from the U.S. to Mexico.

A few years ago there was a non-problem that really got Donald Trump energized. This was the question of whether the president of the United States had actually been born in the United States where his mother and father went to college or if he had been born for some inexplicable reason in Kenya, where neither of them lived. Of course, it didn’t matter either way since his mother was a U.S. citizen, but it was a non-problem that we all had to discuss nonetheless.

Around the same time a new political force came into existence that called itself the Tea Party. “Tea” was an acronym for “Taxed Enough Already.” You want to know what the most remarkable thing was about this movement? As CBS News reported at the time, “as a share of the nation’s economy, Uncle Sam’s take this year will be the lowest since 1950, when the Korean War was just getting under way.”

In other words, these anti-government activists chose the moment of lowest real federal taxation in more than a half century to launch a ferocious anti-tax campaign. Again, a non-problem that suddenly became something we all had to discuss and reckon with.

We’ve had a lot of these non-problems if you think about it. There was the non-problem with Fast & Furious, which was an ill-advised program begun by the Bush administration. There was the non-problem of professor Henry Louis Gates, Jr. and Shirley Sherrod and Solyndra and ACORN and in-person voter fraud and the IRS and the so-called Benghazi cover-up and the Ebola panic and now Syrian refugees.

We seem to be living in a political world that is driven less by problems than non-problems that the Republicans have dreamed up or trumped up.

Our biggest immediate problems are probably climate change and a crumbling infrastructure, which the Republicans seem incapable of doing anything about. Or, if you think our biggest problem is the rise of a new virulent terrorist organization in the Middle East that is now looking to strike the West, the Republicans are focused on the non-problem of 10,000 highly vetted refugees rather than the millions of lightly vetted tourists who come here each year. In other words, they want us to focus our attention and resources on something that won’t help and that will do nothing to address the actual threat.

But that’s the pattern here. That’s basically all we get with these people. They come up with a non-problem and we all have to drop everything to address it.

It’s not just Hillary’s damn emails that I’m sick of hearing about.