Comment by toss1

Umm, that claim is literally a cut-and-paste quote from the US Secret Service announcement (which is why I inserted the ">>" at the beginning of the paragraph to signify the quotation).

So YES, there is a specific claim, and it came directly from the USSS, in the exact article heading this topic. The USSS does not merely toss in observations without a basis in their working threat model (unless they've changed since I worked adjacent to them). It may indeed turn out to be unrelated, but the USSS is publicly stating they are treating it as more than a coincidence.