11.   But Bush seemed to sense the enormous political obstacles to drilling in Alaska.

12.   But his passion -- besides Huskies football -- is clearly horse racing, which he revived in Western Washington, overcoming considerable skepticism and political obstacles in the process.

13.   But if the medical challenge is overwhelming, the political obstacles are also huge.

14.   But political obstacles to change in Europe are considerable.

15.   Fans and critics alike cautioned against writing Wilson off, since he has shown that he can be a tough campaigner and has surmounted difficult political obstacles before.

16.   Facing challenges in the past, Giuliani has overcome many political obstacles by sheer force of personality.

17.   If the lawmakers work out a final agreement, they will have surmounted what is by far the biggest political obstacle to passage of the overall telecommunications bill.

18.   In addition to technology hurdles, the weapon faces political obstacles.

19.   In some countries, political obstacles continue to block many bank mergers.

20.   In some countries, the political obstacles are extreme.