The IRS agents were conducting the screening to determine whether the groups were engaged in political activity. Certain tax-exempt groups are allowed to engage in politics, but politics cannot be their primary mission. It is up to the IRS to make the determination, so agents are supposed to look for clues when reviewing applications for tax-exempt status.
In March 2010, agents starting singling out groups with "Tea Party" or "Patriots" on their applications. By August 2010, it was part of the written criteria for identifying groups that required more scrutiny, according to George's report.
Agents did not flag similar progressive or liberal labels, though some liberal groups received additional scrutiny because their applications were singled out for other reasons, the report said.