Washington ? The Bush administration is stepping up pressure on Saudi Arabia to block the flow of money to terrorists, and working groups throughout the U.S. government are considering ways to tighten controls worldwide.

“The president believes that Saudi Arabia has been a good partner in the war against terrorism, but even a good partner like Saudi Arabia can do more,” White House spokesman Ari Fleischer said Tuesday.

The working groups are focusing on drying up financial support for terror, but they have not settled on specific recommendations, and none has been approved, another senior official said.

“But it’s appropriate to have a broad group look at a number of options, so it’s helpful to have ideas kicked around,” Fleischer said.

At the same time, the administration is pressing Saudi Arabia to monitor Islamic charities to make sure that contributions do not go to terrorists, another senior official said.