A Barack Obama presidency would cost America's entrepreneurial class dearly. Obama has pledged to lift the current cap on Social Security taxes if he becomes president. He'd get support in that venture from a Democratic-controlled Congress. According to the Social Security Administration's website, this means an additional 15.3 percent tax for self-employed people making more than $102,000 annually.

"The Social Security tax rate for 2008 is 15.3 percent on self-employment income up to $102,000," the site notes. "If your net earnings exceed $102,000, you continue to pay only the Medicare portion of the Social Security tax, which is 2.9 percent, on the rest of your earnings."

The May 6 primaries might go down in history as the deciding factor in why America failed to nominate its first female major-party presidential candidate in 2008. It's hard to see after Tuesday's election results how Sen. Hillary Clinton makes the case that she should be the Democratic nominee.

Her campaign pledged to carry on through May races in West Virginia and Kentucky. But in order to woo more superdelegates into her camp—and superdelegates are now the decisive factor in the Democratic nomination race—she had to score a more decisive victory than her narrow 2-point margin in Indiana. And she had to foil Sen. Barack Obama's attempt to score a double-digit lead in North Carolina, which she did not.

"There is nothing better for the inside of a man than the outside of a horse" is a quote by Winston Churchill often erroneously attributed to Ronald Reagan. But after this weekend's Kentucky Derby, it could be said, "There's nothing worse for the inside or outside of a horse than life on the track."

I've been writing these past few weeks about horrendous and fatal equine accidents in the sport of three-day eventing. I own seven hunter/jumper show horses and maintain my own 40-acre horse farm.

If you're a political junkie (as am I) you ought to know about or if not, check out this website. It tracks the superdelegate count in the Democratic presidential nomination race. Since the nomination race is over on the GOP side, it's the only "race" in town for numbers addicts.

It's called 2008 Democratic Convention Watch.

Sen. Barack Obama's response to the Rev. Jeremiah Wright's incendiary appearance on Monday at the National Press Club is not just a day late and a dollar short: It's a month and a half late and a few million dollars short.

Wright's self-promoting and racially divisive remarks have set back a half-century of progress on race relations in the United States. Obama's long-delayed denunciation of his former minister seems to have come too late to save the senator's political self-immolation.

The less things change, the more they stay the same. Earlier this month in this space, I wrote about a March "eventing" competition in Florida at a course called Red Hills. At that event, two horses died and one high-level event rider was critically injured because of the artificial difficulty of the course the horses were forced to complete.

Eventing, or cross-country equestrian trials, tests horse-and-rider duos in stadium jumping, dressage, and a so-called cross-country course of fences outside rings or stadiums.

This week, the North Carolina Republican Party posted a controversial ad on its website that linked the state's two Democratic gubernatorial candidates with Democratic presidential hopeful Sen. Barack Obama. Both North Carolina Democrats have endorsed Obama, but the ad extended their connections to Obama's controversial former pastor, Jeremiah Wright.

Sen. John McCain, the presumptive GOP nominee, has asked the North Carolina Republican Party not to run the ad, but it has thus far refused. Of course, they didn't need to pay to air it: The ad aired almost nonstop nationwide on the cable news networks late in the week. It was viewed online by almost 100,000 people as of late Thursday.