(4 all history buffs): Texan violation of bracero program in 1951?

I stumbled upon this quote from http://www.tshaonline.org/handbook/online/articles/OO/pqo1.html

Increasing grievances from various Mexican officials in the United States and Mexico prompted the Mexican government to rescind the bracero agreement and cease the export of Mexican workers. The United States Immigration Service, under pressure from various agricultural groups, retaliated against Mexico in 1951 by allowing thousands of illegals to cross the border, arresting them, and turning them over to the Texas Employment Commission,qv which delivered them to work for various grower groups in Texas and elsewhere.

Now, is there a name for this? Where can I find more information about this? I honestly did try already myself, but since I haven’t had a thorough education in that part of history yet, I’m completely at a loss.

Can anyone help??