When the marginal return on assets begins to approximate the marginal costs of borrowing, says Ken Fisher.

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When the marginal return on investment from acquisitions risks being low, distributions to shareholders should be more substantial, Peris says.

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So in order for the marginal return to be attractive, you have to consider the presence and financial terms around those sunk investment costs.

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We were also focused on the need to return the top marginal rate to the level it was under President Clinton, 39.6, for the wealthiest Americans, and that was achieved.

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One important element of that legislation was that the personal marginal income tax rate structure would return to its 2000 level on January 1, 2011.

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The President sought and achieved a return to the Clinton-era rates, a top marginal rate of 39.6 percent for top earners, for millionaires and billionaires.

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However, with respect to return on assets, Acadia Healthcare looks attractive at 3.9%, a marginal premium to the peer group average of 3.5%.

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The only -- at the marginal rate level, at the income tax level, the only rates that the President has sought to return to the levels of the Clinton administration, which, by the way, was a period of the longest sustained expansion -- economic expansion in postwar American history, where 23 million jobs were created, and where rich people did very well, indeed, which is a good thing, those rates prevailed.

WHITEHOUSE: Press Briefing