U.S. new President Barack Obama's chief of staff on Tuesday directed government agencies and departments to freeze all pending regulations for review by the new administration, the White House said in a statement.
　　"This afternoon, White House Chief of Staff Rahm Emanuel signed a memorandum sent to all agencies and departments to stop all pending regulations until a legal and policy review can be conducted by the Obama administration," the White House said.
　　It is a common feature of U.S. presidential transitions to do so.