In 2013 Marble said: 

“When you look at life expectancy, there are problems in the black race. Sickle-cell anemia is something that comes up. Diabetes is something that’s prevalent in the genetic makeup, and you just can’t help it. Although I’ve got to say,” she continued at the time. 
“I’ve never had better barbecue and better chicken and ate better in my life than when you go down South and you, I mean, I love it. Everybody loves it.”

There are plenty of genetic markers that influence each and every racial and ethnic segment of the population of Earth... Why did the Senator single out African Americans?

And, WHY would he be tossed from his den for asking an honest question?

Could it be that the Scout LEADERS were attempting partisan influence, and got caught at it?