11.   But Canada, China and the United States oppose such a ban.

12.   But critics say such a ban would almost certainly be unconstitutional.

13.   But he rarely campaigned on the issue, and when pressed said he thought such a ban was a distant goal.

14.   But he said that until such a ban exists, he would not unilaterally stop collecting such money.

15.   But it took no action because of opposition from some elements of the livestock industry and for lack of inspectors to enforce such a ban.

16.   But opponents say such a ban would be unconstitutional, and possibly lead to even more corruption.

17.   But opponents say such a ban would be unconstitutional, and lead to even more corruption.

18.   But logging interests said such a ban would actually worsen forest health and is not based on sound science.

19.   But such a ban is unlikely.

20.   But the mayor conceded that he did not know how such a ban would work and that it raised knotty questions about free speech.