Hey look everyone, those nasty Republicans are trying to keep the economy unstimulated!

The Democrats are trying to stimulate the economy, the Republicans are blocking it. Now that’s a fair-and-balanced accounting of reality.
All sarcasm aside, the reason the Democrat plan was opposed by Republicans is because it included an extension of unemployment entitlements. Which, as a result, would mean an increase in the unemployment taxes businesses pay.
The last time I checked, big new tax hikes on businesses are not how you stimulate the economy.
