Why, you ask, must Republican members of Congress behave like this?
That's the now infamous exchange between Rep. Patrick McHenry (R-NC) and presidential adviser Elizabeth Warren, in which McHenry harassed her and called her a liar, with no basis. Why would a grown man and supposed statesman behave this way? Because, of course, he's amply rewarded for doing so. Think Progress:
According to a ThinkProgress analysis of new campaign finance data released on Friday, McHenry received $63,800 from lobbyists and executives from banks, mortgage companies, payday lenders, pawn shop executives, and other predatory lenders in the last three months alone.