President Barack Obama on Saturday kept pressure on the US Congress to end tax breaks for oil and gas companies, saying they were enjoying huge profits, as he sought to limit political fallout from rising gasoline prices.
With public anger over costs at the pump hitting Obama's popularity as he revs up his 2012 re-election bid, he pressed his call for rolling back US$4 billion in "unwarranted tax subsidies" at a time of budget belt-tightening in Washington.
But opposition Republicans continued their efforts to cast blame on the Democrat president for a surge in gas prices that is straining Americans' pocketbooks at a time of stubbornly high unemployment and sluggish economic recovery.
"When oil companies are making huge profits and you're struggling at the pump, and we're scouring the federal budget for spending we can afford to do without, these tax giveaways aren't right," Obama said in his weekly radio and internet address.
"They aren't smart. And we need to end them."
Oil companies posted sharply higher first-quarter earnings this week with oil prices above US$100 a barrel on unrest in the Middle East and growing global demand for energy.
Leading the way, Exxon Mobil, the world's most valuable publicly listed company, beat analysts' forecasts by posting a 69 per cent rise in earnings to $10.65 billion, its biggest profit since the third quarter of 2008.
Obama insisted he remained committed to "safe and responsible oil production here at home" but said the money from oil industry tax subsidies would be better invested in developing alternative energy sources.
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