I think what Reid is saying is that Frist's idea of attaching the immigration bill to the tax bill will mean that the dems will want to offer amendments to the tax bill and they won't be able to. The real effort seems to be to somehow embarras the House and prevent the immig. bill from going to conference. He did not give McConnell advance notice of this maneuver.
Now Harry is going to go into how talking about marriage is not what they should be doing.