11.   Yet in America -- where legislators modify bills, instead of just rubber-stamping them -- such uncertainty is inevitable.

12.   But members of all parties in the House of Lords have said they will use their powers to delay and modify the bill.

13.   The bill was slightly modified by a mixed parliamentary commission late Tuesday night.

14.   When congress modified the rights bill, the Zapatistas rejected it and withdrew to their jungle strongholds, uttering warnings of renewed war.

15.   Several legislators stormed out of the meeting, however, when their attempts to modify the bill failed.