This is a fire ant. It serves no useful purpose in the United States other than generating a massive income stream for the folks who make, market and sell substances to combat the little demon. I live in the Houston area and have spent countless thousands of dollars in my own little jihad against these stinging insects. They invade my yard, disrupt the enjoyment of my lawn, ruin the gardens and flower beds and find ways to get inside my house and annoy my family and pets. A fatwah! Perhaps there is a better, more organic way?
Of course, bringing in a non-native species never quite works out, does it?