Today, the only mention of corporations in his stump speech is a demand that the corporate-tax rate be lowered.

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Obama had said his stimulus package would keep unemployment rate beneath that level, only to see it crest at 10% in October 2009.

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Billionaire Warren Buffett points out that he pays a tax rate of only 17.8%, compared with his secretary's rate of 35.8%.

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Consequently, the 15% capital gains tax rate is not the only tax that Warren Buffett actually effectively pays on his investment income.

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If that rate is increased to 50%, the producer keeps only half of what he produces, reducing his reward for production and output by one-third.

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Such a move would certainly do little to improve IVF's success rate, but Dr Lieberman says that for many in his field "success is measured only by the birth of a healthy, non-handicapped baby".

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