Texas and California rock. This is why Berkeley, UT, and UCLA are considered less national. People like to stay in these states.
Also, UT has the residency requirements which means that 80% of their students are Texas residents. I don't think this indicates that these people have difficulty getting placed nationally.
I think it is a sign that people want to stay in these states. Less national in numbers of people moving national is one thing. If it relates to ability to get jobs elsewhere, that is someting else.
I would imagine Berkeley has a national name, but people are still staying in CA, and Berkeley's ranking has been higher than it is now.