At a Senate hearing after the story ran, TSA Administrator John Pistole agreed to a request by Sen. Susan Collins, R-Maine, to conduct a new independent study of the health effects of the X-ray scanners, also known as backscatters.

But at a Senate hearing of a different committee last week, Pistole said he had since received a draft report on the machines by the Department of Homeland Security’s inspector general, or IG, that might render the independent study unnecessary. . .