NEW YORK (ETF Expert) -- U.S. stocks have been resilient in their response to bad news throughout the year. They may sink at the start of a trading day but they've been able to recover quickly and finish strong.Consider the most important headlines on Friday. Consumer confidence unexpectedly dropped to its lowest level in nine months. Retail sales dipped by 0.4% in March. The International Monetary Fund intends to cut back U.S. growth forecasts for 2013 from 2% GDP to a sickly 1.7%. The market's reaction? The S&P 500 shed nearly 1% of its value out of the gate, only to close the session a modest 0.3% lower. Of course, the negative stories have not been confined to a singular morning. Developed countries have either slipped into recessions or they show signs of falling further into the abyss. Emerging country stock ETFs have been hit with outflows due to a slowdown in economic expansion in those countries. What's more, both the employment rate (i.e. labor force participation) as well as productivity are stuck in 1979; that is, it has been 34 years since we've seen three straight quarterly declines in productivity as well as witnessed a meager 63.3% of eligible workers in the workforce. At the same time, U.S. stock ETFs are a fraction of a percent off the all-time record highs that they set on Thursday. This is not a mere case of climbing the proverbial "Wall of Worry." This is akin to receiving immunity on the reality TV show hit, "Survivor." Granted, the Federal Reserve's emergency-driven policy of printing trillions of dollars, buying U.S. bonds and forcing interest rates lower has succeeded at reflating demand for homes and stocks. Without question, those who have the money have benefited from the "wealth effect" that accompanies higher prices. What is harder to justify, however, is connecting the dots between this "wealth effect" and the future well-being of businesses or consumers. For instance, we already know that negative pre-announcements this earnings season are higher than at any point since 2001. In other words, neither earnings nor corporate guidance will impress. It follows that we may be looking at a situation where the "P" of stock prices has pole-vaulted higher, while the "E" in earnings may fail to grow. Fundamentally, that's an unattractive combination. The question needs to be asked: At what point will the Fed's trillion-dollar money-printing campaign fail to shelter U.S. stock investors from a pullback, selloff or bearish downtrend? Or is the opposite true: Will we fail to see a pullback, selloff or bearish downtrend until the Fed puts the brakes on its quantitative easing? At least for the time being, investor faith in central bank bailouts is so strong, the Bank of Japan went ahead with a massive asset purchasing plan of its own. Not too surprisingly, the yen lost significant value and Japanese stocks surged skyward. Note: I anticipated the run-up for WisdomTree Hedged Japan Equity ( DXJ) in this commentary from 2012.