While the Senate debated a bill to ban spending earmarked for home-state projects for one year — a measure that was defeated on Thursday — Sen. Barack Obama’s campaign voluntarily released the details of the $740 million in earmarked spending requests that he has made over the past three years.

The International Herald Tribune reports that although Senator Obama was able to secure only about $3 out of every $10 he requested, the list of requests included $1 million for an expansion of the University of Chicago Medical Center in 2006, where his wife, Michelle Obama, is a vice president.

The request was denied.

Senator Obama’s aides as well as officials at the hospital said his wife had nothing to do with the request.

Kelly M. Sullivan, the medical center’s vice president for communications and marketing, noted that Senator Obama had also requested money for a number of other hospitals in Illinois, and stated that, “I can tell you with 100 percent certainty that Michelle Obama was not part of our lobbying over the request, not in any way.”