Elana Schor, writing for TPM-DC, a new Talking Points Memo blog, gathers evidence of why tax cuts are ineffective as economic stimulus.

…Mark Zandi, a Republican economist who advised John McCain’s presidential campaign, has been stressing this point for months. Zandi’s research showed a corporate tax cut delivering $0.30 in real GDP growth for every $1 invested, an alternative minimum tax patch delivering $0.48 for every $1 invested, and a regular tax rebate delivering anywhere from $1.02 to $1.28 for every $1.

Compare that to aid to state governments, which Republicans have roundly criticized: $1.36 for every $1 invested. Infrastructure spending delivers a whopping $1.59 in GDP for every $1.

But it’s not just Zandi making this point. The Congressional Budget Office — you know, the guys with the incomplete stimulus report that Republicans absolutely loved last week — deemed last year that corporate tax cuts are “not a particularly cost-effective method of stimulating business spending.”…

Really, Obama and the Congressional Dems need to respond to all this Republican whining about tax cuts by re-focusing the stimulus bill on truly effective economic measures, not by letting the bill go under because of attempts to be “bipartisan”.

Addition: What Balloon Juice said.

Addition: What Sadly No! said.