In a written response included in the report, the IRS commissioner of the Tax Exempt and Government Entities Division said there was no criminal behavior behind the actions of the agents, but rather inefficient management.
"We believe the front-line career employees that made the decisions acted out of a desire for efficiency and not out of any political and partisan viewpoint," the commissioner wrote.
The report's findings indicate that of the 298 cases reviewed by the IRS inspector general as potential political cases not eligible for tax exempt status: 72 contained the name "tea party," 11 contained "9/12" and 13 contained the word "patriots," according to the report. There were 202 cases that did not contain any such reference.
Of those applications still open for review, 160 cases were open from 206 days to more than three years -- through two election cycles.
Among the recommendations made by the Treasury inspector general: The IRS must better document reasons why applications are chosen for review, develop a process to track requests for assistance, develop and provide training to employees before each election cycle and immediately resolve outstanding cases.
The report also called on Treasury to develop guidelines to explain social welfare activity -- the primary factor in obtaining tax-exempt status.