Former acting White House chief of staff Mick Mulvaney called coronavirus testing delays and roadblocks that were experienced by his son and his daughter “inexcusable.”

“I know it isn’t popular to talk about in some Republican circles, but we still have a testing problem in this country,” Mulvaney wrote in an op-ed published by CNBC on Monday. “My son was tested recently; we had to wait 5 to 7 days for results. My daughter wanted to get tested before visiting her grandparents, but was told she didn’t qualify. That is simply inexcusable at this point in the pandemic.”