Sen. Rob PortmanRobert (Rob) Jones PortmanWATCH: Sen. Flake: “More doubtful” North Korean summit will happen  Lobbying world Trump-backed congressman wins Ohio Senate primary MORE (R-Ohio) called on Congress to pass comprehensive tax reform to boost the economy.

“Our onerous and outdated tax code continues to force businesses to leave the U.S., taking American jobs with them,” Portman said Wednesday. “We can and must reform our tax code again so that we keep businesses and jobs here at home and provide relief to all Americans.”

Congress must act by the end of the year to preserve existing tax credits. House Republicans have said they’d prefer to vote on which tax credits they want to save rather than a comprehensive package — which has been worked out in the Senate.

Portman said Congress hasn’t made major tax reforms since former President Reagan was in office, nearly 30 years ago.

“Twenty-eight years ago, President Reagan signed into law comprehensive tax reform that boosted American businesses by allowing them to compete on a level playing field and eased the financial burden on American families,” Portman said.