One fallacy worth noting is tax cuts or increases (the percentages being considered) for business owners making over $250,000/yr does not influence job creation.
Business owners do not say to themselves, "Gee, I paid $1,000 or $2,000 or $5,000 less tax this year so I'll hire a new employee."
They will only hire a new employee if they believe they will make more money. If they pay an employee $25,000/yr they have to make more than $25,000 plus their benefits. If, say, the total cost will be $40,000 then the company has to make $40,000 plus. If the company makes $60,000 they will pay tax on the extra $20,000 which is their net profit.
So, if the tax rate is 30% the company will pay $6,000 on the $20,000 profit. If the tax rate is 40% the company will pay $8,000, leaving a net profit of $14,000 and $12,000, respectively.
The company will be looking at the $14,000 or $12,000, not the $2,000 difference when deciding to hire a new employee, meaning the tax rate has little to do with whether or not they hire someone.