Saying the review process is seriously flawed, U.S. Sen. Peter Fitzgerald and U.S. Rep. Henry Hyde are calling for an investigation into the way Chicago and the Federal Aviation Administration are proceeding with the O'Hare Modernization Plan. In a letter released Sunday, the two Illinois legislators asked U.S. Department of Transportation Inspector General Kenneth Mead to investigate several points, including: • Whether there's enough available airspace to accommodate the airport expansion. • Whether all of the city's and the FAA's relevant documents have been shared with interested parties. • Whether the FAA should evaluate the financial viability of the plan...