President Donald Trump threatened on Thursday to declare a national emergency to circumvent Congress if he can't reach a deal with Democrats to fund his promised border wall.

He headed to the U.S.-Mexico border to draw further attention to his case after negotiations with lawmakers blew up.

Meanwhile, on the other side of the border, Mexico is dealing with gas shortages. For years, cartels in Mexico have been tapping into gas pipelines and stealing fuel. This week, Mexico’s President Obrador tried to crack down on the fuel trafficking by directing the government to forego pipelines in favor of trucks and heavily guarded trains -- a much slower method of delivery.

We check in on the latest from both sides of the border.

With files from the Associated Press

Guests:

Carrie Kahn, international correspondent for NPR based in Mexico City; she tweets @ckahn

Kevin Diaz, Washington D.C. correspondent for the Houston Chronicle and Hearst newspapers, who’s been following Trump’s visit to the Texas border; he tweets @DiazChron