(We reported Thursday afternoon that Emanuel is "livid," according to an aide, with the Ricketts family and has cut off communications for the time being.)
And another Ricketts son, Pete Ricketts, is a Republican National Committeeman from Nebraska who unsuccessfully self-funded a 2006 Senate campaign against Sen. Ben Nelson (D-Neb.). Pete and Laura also serve on the Cubs board, along with a fourth sibling, Todd.
"We have different political views on how to achieve what is best for the future of America, but we agree that each of us is entitled to our own views and our right to voice those views," Laura Ricketts said in a statement today. "Though we may have diverse political views, above all we love and respect each other."
The seed money for all this activism and entrepreneurship is the elder Ricketts, a self-made man who started TD Ameritrade in the 1970s when it was known by a different name, First Omaha Securities.
The family's net worth has been ranked as high as 93rd on the Forbes 400 list of wealthiest Americans. In 2009, Joe Ricketts himself ranked 371st, with assets estimated at $1 billion.