Your friend has no recourse through Law Enforcement. Once your friend left the scene he too, left the scene of an accident. It is now a civil matter.
He could always sue the other guy, but that is probably an exercize in futility.
He could always try to get the other guy arrested on the warrants, at least for some self-satisfaction. But the guy cannot be charged with Driving without a license, or driving with a suspended license unless he is observed driving by LE, or if he is invloved in an accident where the police are called to the scene.
Unisnusred drivers are a huge problem in Texas. Houston has tons of them.
"Speed is fine, but accuracy is final" --Bill Jordan
Remember those who died, remember those who killed them.