"OK, I get it now. Trump changed his promise but refuses to tell anyone." -- Thomas Dye
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Nope.
What is this thing about "refuses to tell anyone"????
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Do you understand what "The entire news media in 2016 reported that Trump changed his 2015 promise." means?
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Let me clarify  ----- 
Whenever and whatever Trump says to reporters or to his followers in a rally during Election 2016, the entire news media REPORTS whatever Trump said.  So, what's with this thing about "refuses to tell anyone".