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.

After most health insurers racked up financial losses on Affordable Care Act plans in 2014, many companies’ results for last year worsened, creating heavy pressure to improve performance this year.

An analysis of filings by not-for-profit Blue Cross and Blue Shield insurers—among the biggest players in the law’s exchanges for buying individual insurance—shows the challenge facing the industry as it seeks a turnaround in the individual business. They paid out more for health care in the first three quarters of 2015 than they took in from premiums on their individual plans.

On Wednesday, Humana Inc. became the latest of the big publicly traded companies to flag problems, saying its losses on individual plans deepened last year. Humana included in its 2015 results $176 million in losses it expects to incur on such plans in 2016.

House Ways and Means Committee Chairman Kevin Brady (R-Texas) on Wednesday gave a nod of approval to a proposal about Obamacare’s Cadillac tax in the White House’s 2017 budget.

“While we will disagree more than we agree today, I do believe that there are some important areas of cooperation. I’m glad that the White House has finally faced reality in one area and agreed that the so-called Cadillac tax is not workable,” Brady said during a hearing on the proposed budget.

Many contractors who provide farm labor and must now offer workers health insurance are complaining loudly about the cost in their already low-margin business.

Some are also concerned that the forms they must file with the federal government under the Affordable Care Act will bring immigration problems to the fore. About half of the farm labor workforce in the U.S. is undocumented.

“There’s definitely going to be some repercussions to it,” said Jesse Sandoval, a farm labor contractor based in Stockton, California. “I think there’s going to be some things that cannot be ignored.”

Democratic candidate Bernie Sanders recently released his health-care plan: a government-run single-payer system for the U.S., similar to what many European countries have. Criticism of the plan has so far focused on its lack of political feasibility, but there is an even more important reason to be wary: Accounting for costs and tax increases, it would reduce labor supply by 11.6 million. In a struggling economy, with tepid wage growth, hurting employment should be the last thing on any politician’s agenda.

The plan truly promises everything under the sun. Not only will everyone be able to get any medical treatment needed — with no cost at the point of service — but the plan won’t require a terribly high tax increase.

The growing number of ObamaCare failures creates an opportunity for conservatives to make a persuasive case for a replacement, experts said at a policy briefing held by the Conservative Reform Network and the Hoover Institution in Washington, D.C., on Wednesday.

“On healthcare, we too often hear that people on our side, that conservatives don’t have a plan,” said Grace-Marie Turner, president of the Galen Institute. “Conservatives overwhelmingly agree on principals and pillars for reform and for a replace[ment] plan.”