Bill and Hillary Clinton won’t criticize Democratic fund-raiser Kathleen Hammer and her real-estate developer husband, Arthur Seelbinder — but Donald Trump will. Hammer and Seelbinder are the owners of Astor Courts, the Stanford White-designed 50-acre Rhinebeck estate where Chelsea Clinton got married on Saturday. Before the champagne spills were even dry, a full-page ad ran on Page 2 of The Post headlined, “Yes. It’s for Sale . . . Home of Recent Celebrity Wedding” and calling the $12 million property a “National Treasure.” “Over the years, I’ve seen many tacky things take place in the wonderful world of real estate, but never have I seen anything so bad,” Trump told Page Six. “It was disgusting, and if I were Bill or Hillary Clinton, I would never speak to their ‘good friend,’ the owner, again. They were used . . .” A Clinton rep had no comment.