Everything's bigger in Texas.
We can thank the Texas legislature for this one. They deregulated tuition rates and now let the schools charge whatever they want. Before, the legislature would set the maximum rate and cover any losses with money from the PUF (Permanent University Fund). Now the schools are jacking up tuition so, as Robert Gates, President of Texas A&M, says; "We can hire more research faculty and compete with the top national research schools".
They're using our money to hire people so they'll look good on the news and in the all mighty academic publications. Very little is used for actual education of the students.