The USNI (US Naval Institute) News is reporting a new document release from the Congressional Research Service regarding the Coast Guard’s Icebreakers. You can read it here.
A cursory look suggest there is relatively little new here, but it certainly provides in depth background of the choices before Congress and how we got this far.
Chuck Hill's CG Blog 
Hey Chuck, just to let you know, the link doesn’t work.
Thanks, I think it is fixed now.