Washington (CNN) The federal security detail assigned to Education Secretary Betsy DeVos is expected to cost taxpayers more than $26 million during President Donald Trump's first term, according to the US Marshals Service.

Her security cost $6.2 million over the past year -- which was less than expected -- and is projected to cost $7.9 million between now and the end of September 2020, the US Marshals Service said Wednesday.

Politico first reported the cost.

It's uncommon for the Marshals Service to protect Cabinet members, who usually receive security protection through their individual agencies.

request of then-Attorney General Jeff Sessions. He requested security for DeVos after her contentious confirmation battle and an The Marshals Service started providing protective detail for DeVos in February 2017 at therequest of then-Attorney General Jeff Sessions. He requested security for DeVos after her contentious confirmation battle and an encounter with protesters at a middle school in Washington in 2017.

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