Wednesday's Small Business Lending & Investment Summit in Washington, D.C., was postponed due to the "Snowquester," but three of its organizers used an op-ed in Politico to try to convince policy makers to make access to capital a top priority. I was disappointed that some wet snow and high winds canceled the summit -- I was going to moderate one of the event's panels. The federal government -- especially the Small Business Administration -- played a key role in keeping capital flowing to small…