The Wisconsin congressman rejected criticism that his proposal would harm lower-income groups, saying it would instead create jobs and reduce inefficiency.

BBC: Republican Romney names Paul Ryan as running mate

Some tax motivated moves are disguised as something else to quell criticism aimed at anyone preferring a place with a lower rate.

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Demonstrate the revenue streams from lower rates, speaking directly to the "rich get richer" criticism.

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Mr Brown, who will become prime minister later this month when Tony Blair leaves office, was speaking at a union conference where there was much discussion about the recent criticism, from the chairman of a prominent fund, of how managers at such firms pay a lower rate of tax than their office cleaners do.

ECONOMIST: Business this week

The pope's response to this and other cases is attracting criticism, including from prominent laymen such as Wolfgang Thierse, a former Social Democrat president of Germany's lower house of parliament, the Bundestag.

ECONOMIST: Paedophilia and the Catholic church

"The constant criticism of Merck is that its margins are declining, largely due to the fact that Medco, which has lower margins than Merck, was growing faster than Merck, " says Michael Krensavage, an analyst at Raymond James.

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