In the last entry, I wrote,
The Federal Transit Administration (FTA), after reviewing the proposal for the Ann Arbor to Detroit commuter service, decided to "take over" the project.
I misunderstood what was happening: The Federal Transit Administration became the primary federal oversight agency for the AA-Detroit commuter rail project, instead of the Federal Highway Administration, which had previously had the oversight. SEMCOG is still the primary local agency in charge.
My apologies for any confusion and misleading speculation I may have spread. Thanks to Terri Blackmore of WATS for clarifying the whole thing for me!