Because the reconciliation process is not guaranteed and there are some anxieties among House Democrats as to what they do will be replicated and passed in the Senate.

WHITEHOUSE: Press Briefing

One step that the House of Representatives could take tomorrow, if they saw fit to return to Washington to do a little work, would be to pass the bill the President proposed and the Senate passed, which would make sure that 98 percent of the American people did not see their taxes go up on January 1st.

WHITEHOUSE: The White House

All other data, such as shipping and billing address and payment information, would then be passed on by PayPal automatically -- leaving you with nothing to do but admire what a beautiful pair of sneakers your precious Mr. Cuddlesworth makes.

ENGADGET: Log In with PayPal simplifies shopping, uses your account on merchant sites

Mr Clegg said he wanted guarantees that there would not be "back-door privatisation" of the NHS, and the Lib Dems would not allow the bill to be passed "unless I personally am satisfied that what these changes do is an evolutionary change, not a disruptive revolution".

BBC: Vote 2011: Clegg fights back with NHS pledge

But many senators do not much like the Waxman-Markey bill either, and it is unlikely to be passed before the summit, if at all.

ECONOMIST: How to get negotiations on the right track for a deal