*Cow and bull prices are dropping this fall.   *The state of Texas is suing the federal government over an endangered species listing.   *Mexico will import less corn over the next year.  *When the times comes for herd expansion, it will be important for cattle producers to keep a close watch on the economics of expansion. *USDA recently announced a new network to help financially distressed farmers and ranchers.   *The weather is changing as we move into fall.   *The outlook is bright for the East Texas livestock and forage business.   *Sheep and goat producers should be using the FAMACHA scoring system.