Casinos’ Push for Trump Tax Law Fix Gains Traction in Congress

The gaming industry’s push to reverse a provision in President Donald Trump’s tax law requiring gamblers to pay taxes on some of their losses is gaining bipartisan momentum in Congress.

The effort could have wider implications for the president’s second-term legislative achievement, which squeaked through the House and Senate this summer as Trump personally lobbied fractious Republicans to set aside misgivings on everything from Medicaid cuts to the overall cost of the bill.

“Once you open up a tax bill other people have other ideas they want to include,” said Senator John Cornyn, a Texas Republican on the ...