NEW YORK Did you ever think the next sale of Trojans or e.p.t. would help fund President Obama’s healthcare reforms? While Congress has backed off on taxing such products after pressure from Republicans and a flurry of behind-the-scenes industry lobbying, it still has marketers fully in its sights. The sparring over taxation and advertising regulations has only just begun. So far, marketers appear to be faring well in what American Advertising Federation’s evp of government affairs Clark Recto