Republicans may have found a new way to undermine Obamacare: By harassing the organizations that are supposed to help people get health insurance.

Last week, Republicans on the House Energy and Commerce Committee sent letters to at least some of the 105 organizations that, earlier this month, received federal grants to serve as “navigators” for Obamacare. Navigators are supposed to help educate people about their insurance options under the new law—by, for example, explaining who is eligible to buy insurance in the new exchanges, or how to use the online marketplaces once they are operating. In some cases, they will actually help people enroll in the new insurance plans. The model for the Navigator program is the State Health Insurance Assistance Program, or SHIP, which has operated successfully for more than 20 years as part of the Medicare program.

The organizations that got federal navigator grants are a mix of non-profit groups and government agencies—everybody from the Missouri Alliance of Area Agencies on Aging to the Utah AIDS Foundation. Planned Parenthood chapters in Iowa, Montana, and New Hampshire are among those getting grants. But so are several religious organizations, including the Oak Hill Missionary Baptist Church Ministries in Mississippi. The organizations that got the five largest grants were all in states with high numbers of uninsured people—Texas, Florida, Georgia, Ohio, and Michigan. (The Centers for Medicare and Medicaid Services has a full list of the organizations, and Phil Galewitz of Kaiser Health News has more background on them, if you want more information.)

With the new insurance marketplaces set to open in exactly four weeks, these organizations are scrambling to get ready in time. But now, thanks to the House Republicans, they’re also scrambling to answer a committee request for information. “In order to better understand the work you will perform,” the letter states, the Committee is asking the organizations to schedule a briefing “to occur no later than September 13”—and to answer six lengthy questions about their operations.

There’s absolutely nothing wrong with a congressional committee performing its oversight role, particularly when it comes to a law as complex as the Affordable Care Act. And the navigators deserve at least some scrutiny. Do they have all the training and information necessary to give people the right advice? Can they be trusted with personal information? Even a few of the law's defenders—most conspicuously, California Insurance Commissioner Dave Jones—are asking those questions. House Republicans have a right to ask them too.