From the White House, there appeared to be a small sigh of relief mixed with the realization that these gains are fragile and the markets remain volatile.

白宫似乎稍微松了一口气，因为白宫意识到股票指数回升是很脆弱的，市场仍然充满变数。

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Unlike an S-corporation owner, someone who invests in stocks can delay tax by delaying the realization of capital gains.

FORBES: The Arbitrariness of the Buffett Rule

First people defer the realization of capital gains.

FORBES: Blame the Joint Committee on Taxation not the CBO

In the late 1990s, coincident with the Internet bubble, federal revenues from the progressive income tax, spurred by the enormous realization of capital gains and Wall Street bonuses, grew much faster than GDP, rising briefly above the long-run 18% average to more than 20% before the bubble burst and the stock market crashed in 2001.

FORBES: Do We Face A Government Default, Or De-End?