Tax Reform Supporters Target Vulnerable Senate Democrats

Despite assurances from President Trump that he has great unity with his Republican Party and optimism that tax reform are imminent on the horizon, a number of worries are arising among members of Congress, their political advisers and the independent outside groups trying to shepherd the project to the finish line.

So serious is the nervousness that one group, backed by the billionaire small-government brothers Charles and David Koch, is announcing a $1.