From The Chicago Sun-Times: The Chicago school system's inspector general is investigating the company that supplies milk to more than 600 city schools. A Chicago Sun-Times/Better Government Association investigation has found that the school system is paying more for milk than many nearby suburban districts. McMahon Food Corp. — owned by Frank J. McMahon and his five children — controls a $20-million-a-year contract to deliver milk to schools. The company’s certification as a “woman-owned business enterprise” has helped it win tens of millions of dollars in government dairy contracts. But McMahon Food withdrew its request to remain certified as woman-owned business after the Sun-Times raise questions about whether Frank McMahon or his daughter, Bridget McMahon Healy, runs the company.