because I'm a billionaire mayor, that's why.

This is why I like Bloomberg sometimes - more often than I'd like to admit, actually. He's about the only person I can think of with the nerve to disinvite a member of Congress to an event, and I think he makes a nice point: Screw NYC, Screw yourself.

from ">Gothamist:
Bloomberg has stuck to his guns of not being happy when federal money is not coming to New York City. Ney had voted against shifting $446 million to NYC and other "high-terror risk" urban areas, and therefore said Ney "wasn't welcome in my house." So then RNCC chairman just cancelled the whole lunch.