They pride themselves in the idea hardly no one in the American public is aware of this fact.
9/11 made them focus their intelligence abilities on terrorism but those capabilities were hardly new to the FBI.
This clearly states that the powers must be explicitly vested by the Constitution. They can't be made up out of thin air. The state governments != the Government of the United States nor are they Departments or Officers thereof. This passage clearly requires that all federal powers be explicitly granted in the Constitution, though they need not only come from Article 1. Either I'm ignorant of some amendment that grants the powers you're talking about (like the power to have an FDA) or you inadequately understand the meaning of the phrase "vested by". At the end of the day, all of this stuff is stuffed under "regulate interstate commerce" and it's clearly a bastardization of both the word and spirit of the law. If you want broader federal powers, you must amend the constitution, period, and congress has deceitfully snaked its way out of that over and over thanks to the "legislation from the bench" at the Supreme Court that has backed them up at the expense of our constitution's integrity.
Additionally, if you want to learn about all of the ways the FBI has broken the law throughout its existence, I'm talking about stuff outside of any conceivable constitutional allowance, I highly recommend reading this recent book on its history (http://www.amazon.com/Enemies-History-FBI-Tim-Weiner/dp/1400...)
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