GOP senators want to ensure the money is used for its intended purposes.
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With a new administration and a worsening economy, there is unprecedented pressure to trim the complex and expensive Future Combat Systems.
Rule limits the number of set-asides for female-owned small businesses.
President's team continues to expand, despite not being cleared by Congress.
Obama has nominated former New York Health Commissioner Margaret Hamburg to lead the agency on the heels of one of the largest food recalls in history.
Panel is considering its options in case congressional leaders decide another injection of money into the economy is necessary.
Vice president says not all legal spending will be acceptable under recovery rules.
Legislation is necessary as the government seeks to ensure proper oversight of economic stimulus funds, representatives say.
Action would only be used as a last resort if violence in Mexico continues to spin out of control.
Congress already has approved $66 billion in emergency spending this year.