Why not an Across the Board Spending Cut?

If there was a budget proposed that would cut spending by, say, 10% from everywhere that the government spends, would that get passed?

I doubt it.

It wouldn't end the deficit.  We'd need to cut all spending bu around 33% to balance the budget, but 10% would be a good start.

What would the arguments against it be?

Its not cutting waste, but punishing "good spending".   This may be true but the democrats and republicans will never agree on which places should be eliminated so an across the board cut would be as fair as it gets.

Right?

This idea would reduce Social Security payments.  Also true.  Very unpopular.  And certainly the reason why cutting everything would never be acceptable.

Any way that I look at it, Social Security, Medicare, Medicaid, and Obamacare need to spend a whole lot less.  Stories about spending, debt, or taxes that do not mention changing radically entitlements are missing the point.