Whitehouse.gov (and, actually, a lot of other places too) uses a broken regex to "check" email addresses for "validity."
It disregards any email address with a hyphen ('-') in it. Both my primary email addresses (work and personal) include my last name... which includes a hyphen.
(It turns out, determining valid email addresses is really hard. For instance: ValidEmail?"Yes it is!"@AB:CD:EF:00:01:02:03:04 is a valid email address. Really people, other than checking for a '@', it's easier to not filter at all.)
No past-tense about it: Carmine (the coloring created from ground up cochineal bugs), even if Starbucks isn't using it, is still used in A LOT of food and cosmetic products, and many considered it safer/healthier than alternatives like Red #40.