Three Republican members of the House Subcommittee Health and Human Services have written a letter to Health and Human Services Secretary Kathleen Sebelius demanding that she reveal details of her solicitations to health care companies for donations to fund the implementation of Obamacare.

“We write with great concern over the reports of impropriety concerning solicitations of donations for a nonprofit that is assisting in the implementation of the Patient Protection and Affordable Care Act,” writes subcommittee chairman Rep. Jack Kingston, along with Rep. Rodney Alexander and Rep. Andy Harris. “As described by the Department of Justice, federal regulations only permit solicitations by federal department officials ‘if you do not solicit funds from a subordinate or from someone who has or seeks business with the Department, and you do not use your official title.’ In addition, it appears that a great conflict of interest [sic] in soliciting funds for this purpose. Your actions, as described in recent reports, appear to violate these regulations.”

The lawmakers then demand Sebelius answer a number of questions “to clarify the actions that were taken by you and ensure that no wrongdoing occurred.” Among other things, they want to know everyone Sebelius solicited for money; any HHS employees who took part in the solicitations; and a description of “any interactions” the companies that were solicited have had with HHS.

Other House members are also demanding information from Sebelius. On Monday, the Energy and Commerce Committee also sent her a request for information about her requests that top health care and insurance companies, like Kaiser Permanente and United Healthcare, contribute to the higher-than-expected costs of starting up Obamacare.