Following more than a year of diplomatic conflict between the US and Panama, US military forces invaded Panama. The invasion was widely condemned by the international community, but President Bush justified the action as a measure to protect American citizens in Panama, fight Panamanian drug trafficking, protect the neutrality of the Panama Canal, remove General Manuel Noriega, and restore democratic government.
President Bush signed the Americans with Disabilities Act of 1990, which prohibited discrimination against individuals with disabilities in employment, public services and accommodations, transportation, and telecommunications.
The Clean Air Act Amendments of 1990 implemented complex and sweeping reforms to clean air legislation, intensifying efforts at reducing emissions and air pollution and increasing federal and state resources for air quality control.
A pro-democracy student protest in China’s Tiananmen Square in Beijing ended in bloody violence when the Chinese army was sent in to clear the square of protestors. Without warning, the army unleashed gunfire and tanks on the crowd, killing hundreds of protestors. President Bush condemned the Chinese government’s actions.
The Exxon Valdez oil tanker ran aground in Prince William Sound, Alaska. The ship spilled more than eleven million gallons of oil into the sound. The largest oil spill to that point in US history, the spill took months to clean up and had an inestimable ecological impact for the future.