WICHITA, Kan. -

Kansas congressmen Mike Pompeo and Tim Huelskamp are demanding answers from the U.S. Department of Veterans Affairs medical center in Wichita about its unauthorized waiting list for care.

Pompeo sent a letter Thursday to medical center Director Francisco Vazquez, asking who allowed the center to create its unauthorized list and when.

Medical Center Executive Secretary Diane Henderson said Wednesday that 385 veterans had been on the list, some longer than 90 days. But she declined further comment Thursday.

Pompeo also asked whether employees responsible for the list's creation had been disciplined. Pompeo's 4th District includes Wichita.

Huelskamp represents the 1st District of western and central Kansas and serves on the House Veterans Affairs Committee. He traveled to the Wichita medical center Wednesday.

He said Thursday he received few answers then.

Kansas Gov. Sam Brownback says allowing states to inspect U.S. Veterans Affairs hospitals and clinics would help the federal agency with what he calls credibility problems.

Brownback also said Thursday that giving vouchers to veterans who've been waiting for care at VA facilities so they could get care elsewhere is the best way to deal with backlogs.

On Tuesday, Brownback joined fellow Republican governors from five other states in sending a letter to Democratic President Barack Obama. The letter called for state reviews of VA sites and federal vouchers for veterans.

A bill winning approval from U.S. senators to resolve problems in the troubled Veterans Affairs system would create new health facilities.     

Under the larger bill agreed to by senior senators Thursday, the measure authorizes the VA to lease 26 new walk-in health facilities in 18 states and spend $500 million to hire more doctors and nurses.

The Senate bill is a response to a building national uproar over veterans' health care following allegations that as many as 40 veterans may have died while waiting an average 115 days for appointments at the Phoenix VA hospital or its walk-in clinics.