But the most noteworthy thing about Grassley’s letter is its focus on McCabe. Grassley noted that McCabe is already under investigation by the FBI’s inspector general for playing a top role in the Hillary Clinton email investigation even though McCabe’s wife accepted nearly $700,000 in political donations arranged by a close Clinton friend, Virginia Gov. Terry McAuliffe, for her run for state senate in Virginia.

“While Mr. McCabe recused himself from public corruption cases in Virginia…he failed to recuse himself from the Clinton email investigation,” Grassley wrote, “despite the appearance of a conflict created by his wife’s campaign accepting $700,000 from a close Clinton associate during the investigation.”

Now, Grassley wrote, there could be a problem with McCabe’s participation in the Trump-Russia probe. If McCabe had a conflict being too close to Clinton, how could he then investigate Trump? A key passage from Grassley’s letter…