Greenspan questions wisdom of tax changes

US - Alan Greenspan entered the political arena yesterday claiming that use of fiscal policies to manage the US economy could have uncertain results and threaten long-term stability.

His comments were made as Washington policymakers debate a large fiscal stimulus package to combat potential weakness in the US economy, in addition to the Fed's cut in interest rates last week, the Financial Times reported.

During testimony to Congress, Mr Greenspan admitted that "we may need fiscal stimulus at so

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