But expanding the scope of arrest authority is likely to have its greatest impact on those most likely to be singled out for mistreatment by the police.
(expanding the scope of arrest authority; is; likely to have its greatest impact on those most likely to be singled out for mistreatment by the police)
expanding the scope of arrest authority
is
likely to have its greatest impact on those most likely to be singled out for mistreatment by the police