The Democratic Leadership Council's (DLC) first major accomplishment after their 1985 formation was pushing through what Democrats continue to brag was "bipartisan 1986 tax reform" that Obama hoped to base his second term "tax reforms" on until TPP delays thwarted that effort.
"Bipartisan 1986 tax reform" was the most regressive tax reform in history, increasing taxes for most of the 99% and adding loopholes that decreased taxes for corporations and the 1%. Donald Trump's tax evasion was enabled by "bipartisan 1986 tax reform".
When combined with 1986 reform, decriminalization (media calls it deregulation) of New Deal financial industry regulations that reached its zenith during Bill Clintons POTUS stint in the 90s, corporations and the 1% had the perfect combination that enabled them to buy the US Congress and get even more tax breaks and regressive legislation. They have since moved on to buying governments around the globe, with TPP, TTIP and other regulatory capture disguised as "trade deals" postured to soon finish off the middle classes everywhere.
Trump's tax evasion is small potatoes compared to the evasion enjoyed by Boeing, General Electric, Wall Street Banks and other corporations that own the Democratic Party and GOP.