The above-quote is not exactly what Sen. Marble said. On the other hand, what she did say reflected a level of tone-deafness which is the stuff of legends, and I'm not sure that the media said she said that, either. The video is pretty clear. I won't say she's a racist. I will say she's an idiot.
I note that he wasn't booted from his Pack, only from his Den. That suggests that he's still part of the Pack, but it was probably his Den Leader that invited Sen. Marble to the Cub Scout Pack, presumably for a powder puff evening.
Now I will say this: If I had asked a public official a question like that as a Cub Scout, my mother would have been mortified, and would have disciplined me. My mother was a liberal Democrat, and a member of Common Cause, but she would not have approved of me asking someone a "When did you stop beating your wife?" question to embarrass them. And Ames, the young Cub Scout, ought to learn that the only reason these questions are asked is to embarrass people unnecessarily. The incident in question occurred in 2013, four (4) years ago. Would he want his peers to listen to a question as to whether or not he peed the bed since Trump became President? It's fine to question your public representatives, and to ask them tough questions, but it's not right to plan was to embarrass them.
I would also point out the Cub Scout Law of the Pack:
Do you think young Ames came up short on the last point? If he's looking ahead to Boy Scouts, the fifth point of the Scout law is that a Scout is Courteous. Does questioning of this kind in this setting give good will? Is is courteous? Yes, I know "A Scout is Brave", but how much courage does it take to be a snotty? And if HIS mother signed off on this, shame on her.
I have a funny idea that our young folks can grow up to be more gracious than today's politicians. Maybe I'm aiming high.