State lawmakers who oppose high-speed rail are trying to use a budget rider to stop the Texas Department of Transportation from assisting a private company that wants to build a high-speed rail line from Houston to Dallas.

The Senate Finance Committee approved the budget rider 14-1 Wednesday, with Sen. Royce West of Dallas opposed. It will next be heard on the Senate floor as part of debates related to the full budget.

Sen. Charles Schwertner has joined a group of rural lawmakers who are using…