China's restrictions on information about a highly infectious respiratory illness has undermined five years of diplomacy intended to alter its image as a prickly regional power and to improve relations with neighboring countries, Asian politicians and analysts say.

Opponents say that a strict version favored by industry groups, a measure that passed the House and is sponsored by Senator Bob Dole of Kansas, the majority leader, would effectively undermine 25 years of environmental laws.

Every state in the union will suffer in one way or another from the Republicans' relentless effort to undermine 25 years of legislation designed to protect the environment.

Opponents contend that a paved path will undermine 40 years of management strategy for the refuge, which bans bikes and eating on trails.

Based at Milton Keynes, it's the country's largest distribution company, but the move has been condemned as undermining more than a hundred years of service to the public.

In my opinion it's not rational thinking to undermine 20 years of peace building, 20 years of developing democratic institutions, 20 years of respecting neighboring countries (Ethiopia and Djabouti), 20 years of fight terrorism and Piracy, in Somaliland.

Two decades of Saddam Hussein's selecting judges and undermining the courts, three wars, 12 years of international sanctions and the presence of an occupying army would put a strain on any legal system.

"Consolidating appropriations authority for intelligence would undermine 140 years of Congressional tradition and ignore our years of experience on such matters."

These decisions are extremely serious because they undermine more than 20 years of work by campaigners of linguistic causes such as Breton and Alsatian.

"I dared to violate the party line that women are not different from men," a reference to especially bitter criticism from feminist activists who accused her of undermining 20 years of legal gains for women and making discrimination easier.