Why would it be a bad idea to make a vaccine from a healthy, living germ?

(Pls answer.)

Because then you would kill it off and make human immune even though it is helpful.

i think the answer is strength

delegated (sometimes called enumerated or expressed) powers are specifically granted to the federal government in article i, section 8 of the constitution. this includes the power to coin money, to regulate commerce, to declare war, to raise and maintain armed forces, and to establish a post office.