Fire everyone at the IRS, EPA and other worthless government agencies, then interview and hire those necessary to protect American citizens.
Most of the EPA and IRS work need to be pushed down to the states.
All states already have state level equivalents of the EPA. EPA should at least be reduced to an advisory and research role with no regulating authority at all. They can recommend stuff all day long, but it will be up to the states to implement. That by itself would have immeasurable benefits.