Last week, I wrote about Casey Johnson, the great-great granddaughter of the founder of Johnson & Johnson (JNJ). Among your insightful responses was this one, from a reader who’s a Financial Advisor in the Northwestern Mutual Financial Network. “If Casey Johnson was single at the time of her death–and I think she was–and with no current federal estate tax in 2010, she may well be the first famous “name” to entirely escape federal death taxes. (Her estate would still be exposed to state of California inheritance or California estate taxes). “And while Congress will supposedly resurrect the federal estate...