My understanding was that if the job advertised wanting a clearance, you could put it on your resume.
I did and did not get in trouble for it.
I have not held a clearance in 25 years.
#FAKENEWS. If Fakebook is hiring eligible employees, they have a contract to provide products or services to the US Government. One does not ‘have’ a clearance and one does not keep one any longer than is required to support a US Government contract.