Trump promised higher tax refunds. But so far, the average is falling short. Host David Gura and Bloomberg reporter Ben Steverman dig into why, and what it could mean for Republicans come midterms: Listen to the Big Take podcast. -------- More on Bloomberg Television and Markets Like this video? Subscribe and turn on notifications so you don't miss any videos from Bloomberg Markets & Finance: https://tinyurl.com/ysu5b8a9 Visit http://www.bloomberg.com for business news & analysis, up-to-the-