A former border sheriff pleaded guilty to a drug trafficking charge for sharing law enforcement information with a Mexican drug ring.
Reymundo Guerra admitted conspiring to distribute narcotics while he was sheriff of Starr County, which shares a border with Mexico.
As part of a plea deal that recommended dropping two other charges, prosecutors called him a "minor participant."
Guerra could face a sentence from 10 years to life in prison when he's sentenced in July.
Federal prosecutors said Guerra helped the Mexican Gulf Cartel to operate in his county and endangered fellow law enforcement agents by sharing names of confidential informants.