Senate Majority Leader John Thune and President Donald Trump are set to meet at the White House on Wednesday to address a series of contentious tax policy disputes that could impact the GOP’s megabill. Among the most pressing issues is the push to make key business tax incentives permanent, particularly the full expensing for research and development costs. Thune emphasized that permanence is a critical red line for many of his colleagues, but financial constraints complicate the process. Additionally, there are discussions about whether to remove the $40 billion ‘no tax on tips’ proposal from the bill, as Trump remains committed to this policy. Clean-energy tax credits are also under scrutiny, with some senators warning against their potential repeal. Meanwhile, the state-and-local tax deduction cap faces opposition from certain GOP senators, who argue it may undermine other negotiated policies. Thune expressed optimism but acknowledged the challenges of managing intra-party conflicts and external pressures, including those from figures like Elon Musk.