Newly released documents show the Internal Revenue Service tagged groups, including Tea Party organizations, based on the political views of their writings.
USA Today obtained the documents. More than 80 percent of the groups on the "political advocacy" list were conservative.
The American Center for Law and Justice, which represents 23 of the groups on the IRS list, said it appears to be "the most powerful evidence yet of a coordinated effort" by the IRS to target Tea Party groups.
"The political motivations of this are so patently obvious, but then to have a document that spells it out like this is very damaging to the IRS," ACLJ Chief Counsel Jay Sekulow said.