habían facultado
-they/you had authorized
Past perfect ellos/ellas/ustedes conjugation of facultar.

facultar

A consecuencia de ello, los legisladores federales habían facultado al Gobierno para regular cuestiones que eran competencia de los tribunales.
As a result, the federal legislator had allowed the possibility of regulation by the Government of issues that were a matter for the courts.
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to pour