The phrase "a broader authority" is correct and usable in written English.
You can use it when discussing the extent of power or control that an individual or organization has, particularly in a comparative context.
Example: "The new regulations grant a broader authority to local governments in managing public health issues."
Alternatives: "an expanded authority" or "a wider jurisdiction".
A measure giving even broader authority to the military in the drug fight was passed by the House, but Senate opponents argued that the military was untrained, and unprepared, for a law enforcement role.
The Export-Import Bank, for instance, wanted a new, long-term authorization with an expanded loan limit and broader authority.
NEW YORK TIMES Embracing Finra, 'the Devil We Know' | While many investment advisers first panned a bill that would give broader authority to the Financial Industry Regulatory Authority, the plan is gaining traction in some parts of the financial world.
Overall, it is easier to achieve a higher status and receive broader authority by convincing one's peers that the aspired status is deserved rather than by taking ambiguous and potentially adversarial postures.
Endocrinologist Hiroo Imura, former president of Kyoto University, last week was appointed to one of two full-time positions at the prime minister's Council for Science and Technology, which will be given broader authority under a government-wide reorganization scheduled to go into effect in 2001.
Additionally, the powers here being exercised derive from 8 Del.C. § 160(a), conferring broad authority upon a corporation to deal in its own stock.
Supporters revived it using the leverage of imminent expiration of a broader surveillance authority.
It would take an act of Congress to give the department broader authority over accreditation agencies.
It is not denied that Congress has given a very broad authority to the Attorney General to institute and conduct litigation in order to establish and safeguard government rights and properties.
The rule seeks to grossly expand the narrow authorization which carefully limits "waiver" authority to those situations where it is "necessary" to temporarily test small models into a broad-based authority for CMMI to craft its own reimbursement formula in the face of contrary statutory commands.
