Among the presidential powers the Bush-Cheney Administration has worked to expand are "to act in defiance of laws passed by Congress, to shield itself from outside oversight and to impose greater political control over the permanent government." The Globe exposed the role of "a previously obscure device called a "presidential signing statement." President Bush "has employed this mechanism to claim the right to ignore more than 800 laws, asserting that he can set aside any bill provision conflicting with his interpretation of the powers given to him by the Constitution." This power has been used in place of the more limited presidential veto, and "he has used it more often than all previous presidents combined." This has been a push from Vice President Cheney's office, as his history of asserting nearly unlimited presidential power is also examined.