Republicans go full throttle on Obama Veep vetter Jim Johnson.

RNC/McCain camp press releases, conference call mention and opposition research galore highlights former Fannie Mae CEO Johnson receiving a 30-year mortgage loan through Countrywide Chief Executive Mozilo.

McCain aide Holtz-Eakin on Monday conference call: Obama “entrusted the single most important decision in his campaign, the choice of a vice presidential running mate, to a gentleman, Mr. Johnson, who benefited from preferential lending at Countrywide… and is thoroughly entangled in the subprime housing mess.”

Read the Saturday WSJ story that set it off here.

First on The Page: Obama camp — in its seemingly first response to the story — sends out talking points calling it “an overblown story about what appear to be completely above-board transactions.” Read them here.