21.   Riders are attached to bills for political leverage.

22.   Russia demonstrated its willingness to use gas for political leverage last winter.

23.   The only reason they insist on a statutory limit on government debt is that it gives Congress political leverage against the president.

24.   The Republicans have been trying to use the government shutdown as political leverage to force Clinton to agree to a balanced budget in seven years on their terms.

25.   This newfound popularity may give webcasting political leverage.

26.   Another major oil producer, Kuwait, has also said it rejects the idea of using oil for political leverage.

27.   But many port authorities abroad are dominated by large single providers that have formidable political leverage.

28.   But maritime services are dominated by large single providers who hold formidable political leverage.

29.   Chinese wield new political leverage.

30.   Kibria is unlikely to take the risk of proposing price rise of such essentials in his budget to deny the opposition any political leverage.