Business Green: The US renewable energy industry has warned it could be sent “into a tailspin ” unless the administration acts urgently to restore $1.5bn of renewable energy loan guarantees that were this week diverted to cover Medicaid payments and teachers’ salaries. On Tuesday, President Obama signed off on a $26.1bn emergency funding bill, which has been partially paid for through cuts to the budget for renewable energy loan guarantees. The move is the second blow to the loan guarantee …