I've taken several BLPs about long legislative careers to GA status (as I plan to this) and yes, there are always some organizational challenges that come in them.  Most of the material can be covered chronologically but there are always certain aspects of a career that pertain across the decades.  The "Districts, terms, and committees" section was designed to hold that and only that kind of material, such as the general description of his many easy re-election campaigns, trends in his district's demographics, and committees and caucuses that he has served on for a long time.  It was never intended to hold a large amount of detailed material particular to one point in time, such as you have put in there. 

 Perhaps my mistake was to label a section "2008-2010 ethical and tax issues".  If we change the label to just "2008-2010" or "2008-present", then will you be willing to restore a chronological treatment of this period? 

 I got involved in this article because Rangel is a classic American archetype of sorts whose life touches upon all sorts of eras and interesting aspects of American history, and I wanted to convey that life.  2008-2010 is the tragic (in the Shakespearean sense) culmination of this story, but readers won't get its full import if it's broken up into pieces.  I'm sure the weighting problem can be solved by yours and my editing down of the ethical issues material, which was written by others as the events happened (never an optimal approach).