So here is an idea that might work politically: Let taxpayers keep all of the current tax expenditures, but limit the total amount by which each taxpayer can reduce his or her tax liability in this way.
这里有个或许在政治上可行的主意：让纳税人持有所有当前税收开支，但限制每位纳税人可以用这一方法降低其纳税义务的总量。