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Jason Tidwell is seeking his doctorate as he works for the USDA-ARS Cattle Fever Tick Research Unit in Edinburg.

A recently published study by Jason Tidwell, a part-time graduate student in the Texas A&M College of Agricultural and Life Sciences Department of Entomology and full-time microbiologist with the USDA's Agricultural Research Service Cattle Fever Tick Research Unit at Edinburg, lays the foundation for potential new control methods against cattle fever ticks, the vectors of pathogens causing bovine babesiosis, historically known as Texas cattle fever.

That changed when Vasquez and fellow master's biology students at the University of Texas Rio Grande Valley monitored fields of mowed, unmowed and frequently mowed silverleaf nightshade in and around Edinburg, Texas.

Mayors of several border towns - including Brownsville and Edinburg, both in Texas - were expected to be in Washington for the president's announcement.

Brownsville Mayor John Cowen and Edinburg Mayor Ramiro Garza both confirmed they were invited by the White House for an immigration announcement on Tuesday.