The US is a country formed in rebellion against dynasty. So why are 18 members of the country’s Senate family legacies?

We Americans know that the head of state in a monarchy is an inherited position. But we rebelled against that system and created a republic, in which men (and later women) would be chosen to lead the republic on the basis of their own accomplishments, not their family ties. Sure, we had the Adamses, and we may well be fortunate that neither George Washington nor Thomas Jefferson had a son. And there are other dynasties, often combined to one state, like the Longs of Louisiana and the Breckinridges of Kentucky. Representative Rodney Frelinghuysen is the sixth member of his family to represent New Jersey in Congress, dating back to the 18th century. One of his ancestors inspired the classic campaign song, "Hurrah, hurrah, the country’s risin’/For Henry Clay and Frelinghuysen!"

And today, of course, we face the prospect of replacing the son of a president in the White House with the wife of a president. We may have 24 or more years of Bush-Clinton-Bush-Clinton. One leading Republican strategist has recommended that Florida governor Jeb Bush run for president this year, on the grounds in this of all years he won’t lose points for being a dynastic candidate: what are they going to say, "don’t vote for the president’s brother, vote for the other president’s wife instead"?

Lynne Cheney, whose husband served as a congressman from Wyoming before becoming vice president; state house majority floor leader Colin Simpson, the son of former senator Alan Simpson; and two of Thomas’s three sons, Greg and Patrick.