Who would hire a 19 yr old truck driver TN - A CDL Certified?

Honestly? You MIGHT be able to get a job driving a single axle Class 6 or 7 box truck.. you might even find a job pulling a trailer over 10,000 lbs. GVW (such as an equipment trailer) with a Class 6 or 7 single axle truck, but as far as Class 8 straight trucks and tractor-trailers go, your chances of finding employment are slim. OTR companies can't use you - you can't transport commerce across state lines until you're 21, and they usually require you be at least 23 anyhow. Intrastate carriers are going to require tractor-trailer experience beforehand, which you won't have.