Sorry, WHO threatened to do that?
And who said day one? If the next dem prez does something they 'deem wrong', like withhold aid, for any reason, they will pounce. You dems have been literally crying and screeching about impeachment since day one because you deemed Trump unworthy to be president, election be damned.
Trump's old enough, is a US born citizen and has never lived anywhere else. All you need to become president, despite all the left's monosyllabic bitching and moaning.