Government and Politics Watch

Among the highlights from The Chronicle’s Government and Politics Watch:

• Warren Buffett told a Senate committee that federal laws should be changed to prevent foundations from stockpiling money.

• Advocacy groups are protesting a Senator’s plan to force disclosure of the names of certain charities’ donors.

• The Republican presidential candidate Rudy Giuliani has promised to continue President Bush’s efforts to help Africa and other needy regions of the world.