However much United States voters may agree that there is waste in government and that the government as a whole spends beyond its means, it is difficult to find broad support for a movement toward a minimal state.

(A) However much United States voters may agree that

(B) Despite the agreement among United States voters to the fact

(C) Although United States voters agree

(D) Even though United States voters may agree

(E) There is agreement among United States voters that

The correct option is A: "However much United States voters may agree that"

Explanation:

Option B is wrong because there is nothing parallel to the option "that the government as a whole spends beyond its means."

Option C is also wrong because it has similar parallelism error as it is in option C

Option D looks great but we are looking for certainty and not uncertainty. "May" makes it sound uncertain.

Option E seems correct because parallelism is ok here but the sentence in the option followed by a comma makes it wrong.

Option A is the correct option because parallelism is ok there and the "much" in the sentence modifys the verb phrase "voters may agree".