But it's not my government. It's yours. You haven't proposed a change in the mechanism of enforcement, only in the decision making process. So let me answer for you. If the vote came down that 51% of the populace were in favor of imposing a tariff on Chairs imported from Siberia, it would be enforced, violently, if need be.
I say your government since you keep forcing words into my argument and answering for me.
Remembering that the entire country gets to vote on every issue I should imagine the answer to that would be no since it really doesn't seem like an issue worth wasting troop resources or another world war on and would surely end up as some sort of court settlement. I hardly imagine many people voting yes on the docket to "Should we attack Russia because they are flooding the market with cheap chairs."?
Why are you so desparte to resort to violence in your ideas? When you say "if need be" do you somehow expect the final result of every single discussion to come down to weapons and bullets?
Your own reasoning and attempt to frame my answer as you see fit exemplifies why this system is needed, imagine the outcome of the the Cuban missile crisis if instead of JFK George W or someone else less diplomatic altogether was in power? Although this does bring up a good point you'll always need people on the ground in the trenches as it were to represent the voters so I imagine a hybrid approach with politicians heavily controlled by the voice of the people.
As I said before presumably issues of force would remain solidly within the realm of last resort when the country or an ally is under attack.