Why do you think Bush ignores the US Constitution constantly?

On all issues of law the final arbiter in the United States is the Supreme Court. That body in the USA's tricameral system of government has frequently overruled the executive and/or legislative branches of government as to interpretations of existing law. This in no way should lead one to make such statements as "the President is ignoring the constitution." It merely demonstrates that a reading of existing law has been more narrowly defined by the court as interpreted vis-a-vis the constitution and that the system of checks and balances work.