“An influential group of five House Republicans from high-tax states is threatening to hold up a major tax package that is a top priority for President-elect Donald Trump unless they get a significant boost to the amount that their constituents can deduct from federal income taxes to reflect state and local taxes already paid,” CNBC reports. “As negotiations over a major tax cuts bill get underway, they are also drawing a firm line: Simply doubling the maximum allowed deduction from the current $10,000 cap to $20,000, they say, is not enough.”