Pass a bill and watch the staffers re-write it to change it entirely

I jusst don't get it. It doesn't seem to me that this is the way our government should operate. As I understand this article, both the House and the Senate passed Iraq spending bills which prohibited the funds from being used to establish permanent US military bases in Iraq. However, when the bill came to the House-Senate Conference Committee to sort out the differences House Republican Staffers removed the prohibition from the language of the bill, so it will come out of the conference committee without the language that both House and Senate endorsed.

As originally passed by the House of Representatives, the Pentagon would have been prohibited from spending any of the funds for entering into a military basing rights agreement with Iraq.

A similar amendment passed by the Senate said the Pentagon could not use the next round of war funding to "establish permanent United States military bases in Iraq, or to exercise United States control over the oil infrastructure or oil resources of Iraq."

...

Senate aides said Republican staffers removed the provisions from the bills before House and Senate negotiators convened this week in a late-night work session to write a compromise spending bill.

This is not democracy.