"Traffickers use vehicle platforms or car carriers retrofitted with ramps that can extend over the border fence to allow vehicles to cross into the HIDTA (High Intensity Drug Trafficking Area) region," says the report. "The ramps are set up in less than a minute, providing agents with a very small window of time in which to interdict these types of smuggling attempts."

Arizona's border is also vulnerable to exploitation by potential terrorists.

"Alien smuggling organizations reportedly also smuggle aliens from countries other than Mexico, including special-interest countries," says the NDIC report. "Special-interest countries are those designated by the intelligence community as countries that could export individuals who could bring harm to the United States through terrorism." New Mexico's border is hampered by "minimal law enforcement coverage."

"More than half the length of this border is desolate public land that contains innumerable footpaths, roads and trails," says NDIC's April report on New Mexico. "These factors and minimal law enforcement coverage make the area an ideal smuggling corridor for drugs and other illicit goods and services -- primarily alien smuggling into the United States and weapons and bulk cash smuggling into Mexico."

The West Texas border also suffers from scarce law enforcement and potential exploitation by terrorists.

"Moreover, the region's location along the U.S.-Mexico border poses national security and law enforcement issues for the region, such as alien smuggling, weapons transportation, and terrorist entry into the United States through and between ports of entry," says NDIC's West Texas report, published in March.

"As with other areas between POEs along the U.S.-Mexico border in West Texas," the report says of Big Bend National Park, "limited law enforcement presence and rugged terrain make the park conducive to smuggling activities."

Between ports of entry in South Texas, NDIC says, the border is "easily breached" and guarded by few "physical barriers."

"Few physical barriers exist between POEs to impede drug traffickers, particularly Mexican DTOs, from smuggling illicit drug shipments into the United States from Mexico," says a report published in February. "Along many areas of the U.S.-Mexico border in South Texas, the Rio Grande River can be easily breached by smugglers on foot or in vehicles, enabling Mexican DTOs to smuggle multikilogram quantities of illicit drugs, primarily marijuana and cocaine, into the United States."

Our president and congressional leaders now seek to control Earth's climate by capping carbon emissions in the United States -- even as they fail to perform their constitutional duty by capping the flow of contraband crossing our border from Mexico.