Perhaps this is due to Texas' unique history, but from time to time some of our fellow Texans start talking about secession. This time that group includes out governor. The talk tends to occur during periods of time when the state's influence on national affairs is waning, like when Democrats dominate national office. It happened during the Carter and Clinton years, so why not now?
There seems to be a general sense that secession is a possibility. Thanks to Susan for sending me a copy of a email which has apparently floated around for some time, you can see versions here, and here, and here, and here. I'm sure its all over the place.
The problem is that there is no such thing as the Texas-American Annexation Treaty of 1848. Texas, as history buffs will recall, was annexed in 1845. The treaty signed then dealt mostly with the status that the Republic of Texas had accumulated, and said nothing about secession. The congressional resolution which authorized Texas' entry into the union did stipulate that Texas could divide into five states, but again nothing about secession.
An 1869 Supreme Court case not only stated that Texas could not seceed, but that it did not actually seceed when it entered the Confederation.