Tuesday update.

On The Kudlow Report, Steve Forbes debates Social Security reform:

In his column, Forbes opposes high-speed rail.

Larry Kudlow examines the summer's economic troubles.

Joseph Calhoun analyzes dollar volatility.

Since 1995 the US dollar index first rose by 50%, fell by 40%, rose by 24%, fell by 16%, rose by 20% and finally fell 10%. Furthermore, the swings have become more frequent recently. The initial 50% rise took 7 years (1995 to 2002; roughly the internet bubble) with never more than a 8% correction. The 40% fall took six years (2002-2008; roughly the housing and commodity bubble) with the biggest countertrend move being 15%. Then during the recent crisis and the aftermath, Fed policy allowed the dollar to rise 24% in 8 months, fall 16% in 9 months, rise 20% in 8 months and finally fall 10% in just 3 months.

From 2003, Robert Mundell proposes an international currency.

In The Washington Times, Richard Rahn derides government policy.

At Counterpunch, Paul Craig Roberts paints a gloomy picture of U.S. economic, defense and foreign policy.

At The Fiscal Times, Mark Thoma worries that the Fed will monetize some of the federal debt.

Cato's Daniel Griswold rebuts trade deficit worriers. (H/T: Cafe Hayek)