One of many reasons—but a big one—why U.S.-bound migration has hit record levels, and may break records again this fall, is that the Darién Gap jungle region straddling Colombia and Panama is no longer an impenetrable barrier.

In fact, the Darién Gap has been crossed over 330,000 times so far this year, including 82,000 crossings in August, according to the latest in a very good series of reports from New York Times correspondent Julie Turkewitz and photographer Federico Ríos.

It’s not really clear what Colombia and Panama can do about it. The options are really lousy:

• Try to block migrants? Good luck with that. The Darién Gap is dense, roadless jungle (at least for now). If security forces focus on one pathway, another will open up. And what if Colombia and Panama somehow succeed in blocking migrants? What do they then do with hundreds of thousands of stranded people from all over the world? Fly them back to China, India, Afghanistan, Cameroon, and dozens of other destinations, at huge expense and at huge risk to the returnees? Bus them back to threats and penury in Venezuela and Ecuador?

• Create a safe movement corridor? Channeling migrants through a route that is government-controlled territory—or, better yet, avoids the environmentally fragile forest entirely—would cut organized crime out of the picture. It would reduce many of the alarming security risks that migrants now face. Governments would have biometric records and other data about everyone attempting to pass through. By registering most migrants and permitting them to transit their territory on buses, Panama, Costa Rica, and Honduras are already doing this. But the political obstacles to “safe passage” approaches are beyond daunting: the U.S. government (or at least, key officials and members of Congress) would condemn and seek to punish Colombia and Panama for waving everyone northward. U.S. officials would fear that the promise of safe passage would attract still more migrants.

• ”Soft blocking” of migrants? That more or less describes the situation today in the Darién region (and Mexico, Guatemala, and some South American countries). The official position is that migration is an administrative offense, and migrant smuggling is illegal. A handful get detained or deported, and some (usually very low-level) smugglers get arrested. But either security forces view their checkpoints and patrols as opportunities to shake migrants down for bribes, or organized crime takes over routes. Usually both. Migrants get assaulted, robbed, or worse. Some may spend time in state detention. But if they can run that gauntlet and remain alive—and most do, obviously—very few end up discouraged from proceeding northward.

None of these options is promising: some violate the most basic human rights, some assist organized crime, some are simply impossible, and the least-bad choice would hit a political brick wall.

Faced with these very poor choices, it’s not surprising that leaders like Colombia’s Gustavo Petro are reluctant to make in-transit migration a priority. According to the Times:

Colombia’s president, Gustavo Petro, acknowledged in an interview that the national government had little control over the region, but added that it was not his goal to stop migration through the Darién anyway — despite the agreement his government signed with the United States.

After all, he argued, the roots of this migration were “the product of poorly taken measures against Latin American peoples,” particularly by the United States, pointing to Washington’s sanctions against Venezuela.

He said he had no intention of sending “horses and whips” to the border to solve a problem that wasn’t of his country’s making.

That last bit is a veiled reference to a September 2021 incident in Del Rio, Texas, where Border Patrol agents on horseback were caught on camera charging at Haitian migrants on the bank of the Rio Grande. The Times continues:

just like the people running the migration business, he [President Petro] presented his hands-off approach to migration as a humanitarian one.

The answer to this crisis, he said, was not to go “chasing migrants” at the border or to force them into “concentration camps” that blocked them from trying to reach the United States.

“I would say yes, I’ll help, but not like you think,” Mr. Petro said of the agreement with the Biden administration, which was big on ambition but thin on details. He said any solution to the issue had to focus on “solving migrants’ social problems, which do not come from Colombia.”

He expects half a million people to cross the Darién this year, he said, and then a million next year.

He may be right.