Days before President-elect Donald Trump is sworn into office for a second term, a conservation organization says a ...

Added length to the southern Arizona border wall may lead to the extinction of a rare desert fish, the Center for Biological Diversity said Wednesday.

The Southwest border has been closed to cattle since November, when a case of New World Screwworm was detected in a cow in ...

Residents along Arizona's 372-mile border with Mexico make up a complicated tapestry of views, concerns and hopes on the eve ...

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According to a Fox News report, law enforcement said the man drove the truck into the U.S. from the Mexico border at Eagle Pass, Texas, just days before the attack. U.S. President-elect Donald ...

The attack took place around 30 miles south of the U.S./Mexico border. State investigators confirmed that the immigration agent suffered a head injury and was found with no vital signs.

The slain agent was attacked at a checkpoint just south of Ciudad Juarez, which is across the border from the U.S. city of El Paso, Texas, when he asked an unspecified number of foreign nationals ...

Unlawful border crossings along the U.S.-Mexico border have dropped to a four-year low, according to U.S. Customs and Border Protection, with 46,610 people stopped between ports of entry in November.

Authorities in Mexico uncovered a suspected drug tunnel on the U.S.-Mexico border by deploying a drone. The State Public Security Secretariat of Sonora Mexican authorities believe they have halted ...

Two little migrant girls clutching a handwritten note were dumped at the US border by a smuggler who ran back to Mexico, according to authorities. The stranded kids from El Salvador, ages 5 and 9 ...