Even in America, where the strength of the expansion has consistently surprised economists, there are nascent signs of slowdown and worries about oil.

ECONOMIST: Running out of puff? | The

The Federal Reserve should keep the basic value of the dollar steady rather than worry about the level of the stock market or fret about the length or strength of the economic expansion.

FORBES: Fact And Comment

In particular, he said we should maintain our economic strength by extending the tax relief that has fueled our economic expansion and by aggressively restraining spending.

WHITEHOUSE: Testimony of Director Bolten

The PMI in March, for example, strengthened to 61.2, up from 57 in December. (An index value of 50 is the demarcation between and expansion and contraction.) New orders, production and employment all showed increased strength.

FORBES: Job Creation, Economic Growth And Social Justice