The first major donations to Obama’s presidential library are rolling in from New York and Chicago, two cities that are competing to host the future library. Tim Collins, a New York-based private equity investor gave between $250,001 and $500,000. So did James Simons, a mathematician and hedge fund manager.  Another donation of more than $250,001 came in from Chicago’s Michael Sacks, a business executive who leads Rahm Emanuel’s World Business Chicago.