USA Today quoted Joe Birkenstock in an article concerning potentially improper campaign contributions to several congressional and presidential candidates:

While campaigns cannot investigate every donation they receive, “getting multiple maxed-out contributions on the same day from an identifiable group of first-time political donors that the campaign doesn’t already know well is definitely a yellow light,” said election lawyer Joe Birkenstock. “It doesn’t necessarily mean there’s anything wrong, but that’s generally the kind of fact pattern a compliance team should follow up on.”

The rest of the article can be found here.