Bush's proposed tax cut makes budget-trimming a necessity. But that will make it tough to keep some campaign promises.EDUCATION

The Administration has pledged to spend about $50 billion on schools and new early-education reading programs.THE MILITARY

The President promised a huge increase in defense spending. But he has since ordered a review of all Pentagon spending.THE ENVIRONMENT

The E.P.A. may try to save money by tightly limiting spending on federal pollution controls.THE JUSTICE DEPT.

It could get savings by cutting Clinton programs. One likely target: A program to help local communities hire more policemen.