Whereabouts are you from? <a href=" https://www.tca.nl/amlodipine-5mg-tablets-used.pdf#centuries ">norvasc costco</a> The legal justification of executing strikes without congressional authority (or UN mandate) was already fuzzy. But by deferring to Congress, Mr Obama is setting a precedent that he – and future presidents – may come to rue, particularly if it is interpreted as a surrender of executive authority.