IRS targeted tea party groups for more aggressive tax law enforcement . Authors say politically motivated enforcement is a risk of efforts to reverse Citizens United ruling . IRS has been under pressure from the left to crack down on conservative groups , they say . Authors : The ACLU 's lobbying arm , for which we work , is a 501 ( c ) First , Congress needs to enact ironclad laws to prevent corruption .
IRS targeted tea party groups for more aggressive tax law enforcement . Authors say politically motivated enforcement is a risk of efforts to reverse Citizens United ruling . IRS has been under pressure from the left to crack down on conservative groups , they say . Authors : First , Congress needs to enact ironclad laws to prevent corruption .