https://www.nytimes.com/2019/01/18/us/politics/pelosi-donald-trump-cancel-travel.html
Mr. Trump asked on Twitter before Ms. Pelosi’s office had announced the postponement.
I think past before past should be in past perfect tense.
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Sign up to join this communityhttps://www.nytimes.com/2019/01/18/us/politics/pelosi-donald-trump-cancel-travel.html
Mr. Trump asked on Twitter before Ms. Pelosi’s office had announced the postponement.
I think past before past should be in past perfect tense.
When "before" or "after" is used in a sentence past perfect is not necessary because these words make the order of events clear. In your example it is understood Trump's asking preceded Pelosi's announcement.