21.   After its shutdown of television transmission facilities Monday, Serbian authorities further tightened control of the media Thursday by expelling reporters.

22.   Albright and Ivanov also signed an agreement tightening controls on technology used in launching US satellites from Russian space stations.

23.   Brigham officials said last February that they were tightening controls on potassium after the death.

24.   British prime minister John Major pledged to tighten controls on welfare spending and foster an environment of self-reliance to keep expenditure under control and make way for tax cuts.

25.   But Claybrook said the fact that more Americans are being killed in truck-related crashes is reason enough for tightening government controls on the industry.

26.   But it is likely that the European Union will decide to tighten border controls, restrict migration and discourage illegal foreign workers.

27.   But in April, Vladimir Putin, only a month after having been elected president, promulgated a series of decrees aimed at tightening controls over foreign adoption.

28.   But she notes that after the United States tightened its controls on the shipment of dangerous pathogens several years ago, only the United Kingdom and Germany followed suit.

29.   By contrast, the legislation does not tighten controls on the largest political action committees that collect regulated funds called hard money.

30.   China has in recent months arrested scores of dissidents, closed newspapers and fired outspoken editors in an accelerating effort to tighten control on public discourse.