Missouri Gov. Mike Parson has joined with 14 other Republican governors looking to lower the national commercial driver's license age from 21 to 18 in order to get more trucks on the roads to help alleviate supply-chain issues.But not all truck drivers believe that is a good idea."Right now, they're limited to stay within their state," said Lewie Pugh, of Owner-Operator Independent Drivers Association."It's a safety thing in my opinion," Pugh said.Parson wants the Biden administration to lower the age requirement from 21 to 18."We all know that younger people crash more," Pugh said.He pointed to the recent case of a 23-year-old driver who crashed in Colorado, killing four people."You have to know what you're doing going down a mountain," Pugh said.He said there are parts of the country where tractor-trailer drivers have to be extremely experienced."You want to take an 18- or 20-year-old kid that's never been out of the Midwest and you want to send them to California across the Rocky Mountains?" Pugh said.Parson recently created a Missouri Supply Chain Task Force to help solve the issues, but Pugh said that it should start where trucks are loaded."If you put more trucks at the port, you're just going to have longer lines. Shippers and receivers need to load trucks quickly and get them down, and then we would really see the volume of trucks that we really need for the volume of freight," Pugh said.Pugh said there are thousands of tractor-trailers across the country parked right now. He said that it is not a shortage of drivers. He said the drivers just stopped driving because it is not profitable to do it right now."If you're sitting at the loading dock, you're not making any money," he said. "There's so many hours wasted waiting to unload or load."Pugh said his group is in favor of raising the age requirement instead of lowering it. Area truck driving schools support the idea of lowering the age requirement.