That would be correct.

A $1 government tax expenditure of a "Non-refundable lump sum tax rebate" (item#1 in table) would produce a net gain of $1.02 in GDP after 12 months. That would be a net 2% gain (based on the dollar inputs, not the overall change in GDP).

So if the US government wants to mitigate the economic damage from a recession, the best way to do it is with a temporary increase in Food Stamps program and extention of UI benefits.

Backstopping the States is also a good policy since the States tend to roll back spending pretty drastically during a downturn and that just tends to make things worse.

Accellerated infrastructure spending isn't a bad policy, but usually takes too long and way too susceptible to porkbarrel games (meaning such spending may not end up being targeted to the regions that need it most).