APHIS in Action

Last Modified: March 16, 2026

Every day, APHIS works to protect the health and value of America's agricultural and natural resources. These articles tell a story about how we are tackling some of the biggest issues facing U.S. agriculture and natural resources today.

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What happens when two tiny travelers accidentally cross an ocean? Thanks to the dedication of APHIS employees and international partners, this story has a happy ending.

For over a century, a dedicated group of mounted patrol inspectors—known informally as Tick Riders—has patrolled the southern U.S. border. Their mission: protect U.S. cattle from the cattle fever tick, a parasite that causes severe blood loss, weakness, and can transmit deadly diseases like babesiosis and anaplasmosis.
 

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