The trucking industry is stepping up efforts to pass legislation that would curb the ability of states to regulate the business and make it harder for drivers to sue their employers for back pay.

A group of drivers from some of the largest carriers in the country, including Ryder System, Inc., U.S. Xpress Inc., Swift Transportation Co., J.B. Hunt Transport Services Inc. and Werner Enterprises Inc. visited last week with Democratic senators from the Committee on Commerce, Science & Transportation.

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