President Trump claimed success for “opportunity zones” during Tuesday’s State of the Union address — the new tax program created by the 2017 tax bill meant to revitalize poor communities through investment. Yet, there is no metric for determining their success, and fixing that will take an act of Congress.

“There are no reporting requirements in the legislation to allow us to know the comprehensive client data assessment of what benefits are accruing to the communities,” said Brady Meixell, a research analyst at the Urban Institute.