Many lawmakers hold investments in insurance, pharmaceutical and prescription-benefit companies and in hospital interests, all of which would be affected by the administration’s overhaul of health care.

Conflict of interests. Why do we think we live in a democracy? The only "people" our government represents are the wealthy and themselves (which is redundant)

Disclosure is good. Legislating our legislators is good. Saving our economy is good. In fact, this should be a matter of national security.

Wouldn't many (most?) suffer under a national health plan? Some holding certain sub-sectors might influence a vote "for" while some might influence a vote against. If they own large parts of the whole health sector then it would be hard to predict what the overall effect would be, I think. Now, if this causes people to feel the economy will suffer due to more bi Gov. action - health or other - people will go to defensive sectors like healthcare and consumer staples, then rotate out again as outlook improves again.
I wonder if that effect wouldn't overshadow the broader effects resulting from national healthcare

many stocks suffer, is what I meant.