Targeting conservative and Tea Party nonprofit applicants for harassment during the 2010 and 2012 campaigns was the most obvious, but far from the only illustration of how deeply President Obama politicized the daily operations of the IRS, according to a new report from a congressional oversight panel.

“Most American taxpayers find themselves at the mercy of the IRS — they must turn over sensitive information and even successful efforts to fight off erroneous agency actions can create life-altering turmoil,” said the report that will be made public Tuesday by the House Committee on Oversight and Government Reform.