Levelling-up and Regeneration Bill

I think we largely agree on the role of government in determining what the missions and metrics should be, but can my noble friend explain why the principle applied to the national procurement policy statement—that the Government decide what the priorities are and Parliament can debate them and if necessary say that it does not approve of them—is not applied to this important set of policy priorities? Why have the Government put that into legislation currently before the other place but not done the same in relation to this Bill?