As she faces two separate efforts to remove her from office, San Mateo County Sheriff Christina Corpus is now subject to tighter financial oversight, with supervisors voting unanimously Tuesday to require county executive approval for any contracts below $200,000 — a change Corpus says will hinder her ability to run the department.

The ordinance, approved unanimously by the Board of Supervisors, comes after a review found Sheriff’s Office reserves had fallen to less than 0.5% of net appropriations, far below the 4% minimum required under the county’s reserve policy.

Under the new rules, the Sheriff’s Office no longer has authority to approve contracts below $200,000 on its own. Instead, those agreements must be submitted to the County Executive’s Office for review and approval. Contracts

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