State Sen. Eric Stewart was hit with federal tax liens twice in the past decade for not paying his federal and personal business taxes on time.The revelation comes as Stewart is fighting U.S. Rep. Scott DesJarlais for his seat in Congress. The 16-county race in the 4th Congressional District will be decided in November.The first IRS lien against Stewart, which has been paid, was filed in 2002. It was for $9,541 for personal taxes in 2000 and 2001.The second IRS lien, which remains on the books, was filed in 2011.