Texas A&M University-Commerce economics professor Dr. Dale Funderburk says the decision of voters in Great Britain to leave the European Union, or Brexit, will have a significant effect on the Texas economy. Dr. Funderburk says the stock market overreacts to uncertainty, as we saw in the first couple of days after the Brexit decision. But he says the EU is America's greatest trading partner, but Canada and Mexico are the largest individual countries that are trading partners of the U.S.