united states - When is a person legally considered to be "President-elect" in regards to laws against threatening the President?
There have been news stories about individuals threatening to kill President-elect Donald Trump shortly after the election, such as this man who did it over Twitter. According to the news article, he tweeted it at 1:42am EDT on the day after Election Day. However, it wasn't until 3:00am EDT that Trump secured 270 Electoral College votes (at least according to the media, since the Electoral College does not meet until later).
From a legal standpoint, when exactly is a person considered to be "President-elect" regarding the laws to threaten the President?