Should there be a comma?

I read this sub-headline from Fox News' website this evening.

"House passes, Bush signs $700B bill allowing Treasury to buy up bad debt crippling financial system."

I first read it as if there was a comma after "debt". Essentially, 'House passes, Bush signs $700B bill allowing Treasury to buy up bad debt, crippling financial system.' As in, what they just did with this bailout is crippling our financial system, not the bad debt crippling the system. We'll see in years/decades to come whether a comma belonged there or not.