Both cybersecurity and customer service at the Internal Revenue Service have suffered because of ObamaCare, the agency’s head said in remarks to Congress on Thursday.

“Congress, as I noted in my testimony, has underfunded … the Affordable Care Act,” IRS Commissioner John Koskinen told a panel of the House Appropriations Committee.

Koskinen delivered his remarks in response to a question from Chairman Rep. Hal Rogers who pointed out that Congress had “increased funding specifically for taxpayer services” in 2014 and 2016.

Koskinen said it didn’t matter where Congress intended the money to go, explaining the agency had pulled funding for customer service and cybersecurity in order to ensure compliance with the ACA.