Wednesday afternoon, Sen. Bernie Sanders tweeted the following:

It’s not a mystery why drug companies raise their prices to obscene levels. Just look at the multi-million dollar paychecks their CEOs get.

— Bernie Sanders (@SenSanders) August 24, 2016

During his campaign for the Democratic presidential nomination, Sanders often made an issue of high drug prices. And recently, Sanders noted that the price of epinephrine injectors, a.k.a. "Epi-Pens," which millions of Americans depend on as a lifesaving measure in case they have an allergic reaction, appear to have been artificially inflated:

There's no reason an EpiPen, which costs Mylan just a few dollars to make, should cost families more than $600. https://t.co/rVWUlMxD0Q

— Bernie Sanders (@SenSanders) August 18, 2016

Just this morning, Bloomberg reported the following (as noted by Geoffrey Norman in THE WEEKLY STANDARD):

Members of Congress are in an unusual position as they demand an explanation for Mylan NV's 400 percent price hike for the EpiPen and focus attention squarely on its CEO: Heather Bresch. If lawmakers follow the usual script, Bresch could get called up to Capitol Hill next month to explain her company's justification for raising the price on the life-saving allergy shot. But that could be awkward, since she's the daughter of Democratic senator Joe Manchin of West Virginia.

It would seem that Sanders's tweet about CEO salaries is a pointed message directed squarely at his Democratic colleague in the Senate.