I like the direction your taking but say you are a person who does not believe in military intervention of foriegn nations that are no threat to our own borders.   Or just say you don't like military spending for your own reasons.

Do you think withholding tax's on a personal level with have any impact of those who make the decision on how tax money is distributed?   How many times was military spending put 'off line' from the budget because we had a war to conduct.
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It would be interesting to see what a federal budget looked like if we all got to choose from a list of priorities we support!!  I don't see it happening but always thought it would be a interesting way to survey public opinion.