I just recently found out someone used my name in Texas...?

This person has 7 dui's and was pulled over in Travis county. I found out that there is 2 warrants in Texas, I live in Illinois. Does not make any sense that someone can use my Identity so easily. I spoke with the deputy in that county, he said if its a minor traffic violation they really don't press for ID. The other issue is the birth date she gave is not even close to mine. So how do they match someone up issue a court date and warrants? I also would like to pursue Identity theft charges. Any suggestions?