The White House may strip 9 former officials of their security clearances, and it's reminding people of Nixon's infamous 'Enemies List'

• The White House announced the revocation of former CIA Director John Brennan's security clearance last week, and said the clearances of nine other former officials are under consideration for revocation.
• Some of the former officials are vocal critics of President Donald Trump, and their potential punishment sparked concern Trump was using his power to serve his own political interests.
• The list of those at risk of losing clearance harkens back to former President Richard Nixon's infamous "Opponents List," written by an aide that identified the administration's top "political enemies."

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President Donald Trump set off a firestorm last week when White House Press Secretary Sarah Huckabee Sanders announced former CIA Director John Brennan's security clearance was being revoked, and listed nine other former intelligence and law-enforcement officials whose clearances are under consideration for revocation.

Some of the 10 former officials have been vocal critics of Trump, or involved in the investigation against him. The list follows Trump's fierce rhetoric against the media and intelligence communities that have grown more intense during his time in office and harkens back to a now-infamous political hit list.

The "Opponents List" was revealed in the 1973 proceedings of the Senate Watergate Committee and included names of journalists, congressmen, businessmen, entertainers and Democratic Party donors as the top enemies of former President Richard Nixon.

Take a look at the list below: