They absolutely did. That something is legally within the bounds of the US tax code is public knowledge. That ultra-wealthy utilize something to an extent is

They absolutely did. That something is legally within the bounds of the US tax code is public knowledge. That ultra-wealthy utilize something to an extent is not public knowledge. Which cuts to one of the central issues with viewing the US tax code as democratic: there's almost no transparency of use. The public might feel very different about a particular tax rule if they knew small businesses primarily used it, vs if they knew major corporations used it to shield 90% of their profits. The IRS should do a better job of anonymizing actual tax reports, and reporting out on patterns in aggregate.