21.   The study was based on visits to care centers before and after Florida passed legislation tightening staffing requirements.

22.   They give the ranking minority member of the ethics committee more power than in the past, tighten confidentiality requirements and require that all committee staff members be bipartisan.

23.   This year, the USDA tightened requirements.

24.   --Tighten requirements on expert testimony.

25.   When Democrats complained that the GOP-backed approach had loopholes, many Republicans voted earlier Thursday to tighten some requirements.

26.   Other Middle Eastern consulates had said earlier that China has tightened entry requirements for their nationals.

27.   After the Eappen case, the department tightened training requirements and now mandates courses on stress management and shaken baby syndrome.

28.   Also, that recent steps to limit exposure of banks to the real estate market and to tighten liquidity requirements will strengthen the financial system.

29.   But she has been criticized for tightening reserve requirements and mishandling a growing tide of bank insolvencies.

30.   Citing security concerns, Malaysia has tightened entry requirements for African citizens, a government official said Friday.