Mr. Kirkham, I agree with most all of what has been said here, but perhaps mostly the comment regarding knowing your audience. These politicians have probably already made up their minds and have opened hearings as a matter of policitical damage control.
That does not mean that they won't listen....pol's LOVE to listen to their constituents, regardless of whether or not they plan on changing their agendas or behaviors. What will turn them off more quickly than anything is for you to stand up and tell them what they have been doing wrong WITHOUT telling them what they have been doing right.
I suspect they might well be receptive to suggested simplification of the tax codes as well as more effective methods of collecting taxes from those who attempt to avoid paying their share (a suggestion: any employer who hires undocumented aliens, many of whom are in my experience incredibly sophisticated tax dodgers, should be penalized in a manner that will be equal to the taxes those undocumented workers have avoided).
Massive changes in our financial world are ongoing and we are powerless to stop them...perhaps we need a change of politicians before we can see the improvements we want (of, course, they WON'T want to hear that!!!!).
Cheers from Dugly