The gov has acted; he is calling up the DPS:
http://www.freerepublic.com/focus/f-news/3169542/posts?page=225#225
We need to be watchful.
The governor doesn’t “call up” the DPS. The DPS is active across Texas 24/7/365. This is just a re-allocation of resources to the border with the funding to support it.
Perry could, indeed, take further measures, such as calling up additional forces like state militias or the National Guard, but, as far as I know, that has not yet happened.