The global crisis lender said in its annual report card on the US economy that the country will likely grow only 2.0 per cent this year, compared with the previous 2.8 per cent estimate, blaming mainly the unexpected contraction in the first quarter.
It said growth is likely to rebound to 3.0 per cent next year, but that to ensure the strength of the economy, the government should take measures like increasing the minimum wage and embarking on a strong infrastructure-building program.
Labor markets are weaker than is implied by the headline unemployment number," the Fund said, citing the low workforce participation rate and stagnant wages.
"With better growth prospects, the US should see steady progress in job creation."
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The IMF said the US government could afford to take short-term measures to strengthen growth and jobs, despite the ongoing large fiscal deficit and huge government debt burden.
"Given the substantial economic slack in the economy, there is a strong case to provide continued policy support," the Fund said.
It said more government efforts to boost growth short-term would allow the Federal Reserve to more comfortably exit its easy-money stance and cut the risks that stance poses to global financial stability.