Yes, but because he didn't get 270 EC votes then the decision goes back to the house on a one-vote-per-state basis and President Trump is re-elected.
This theory has never been tested in courts before, but by the most straightforward and obvious meaning of the statute and the Constitution, the above is incorrect.
Here's the relevant section of the Constitution:
- "The person having the greatest number of votes for President, shall be the President, if such number be a majority of the whole number of Electors appointed; and if no person have such majority, then from the persons having the highest numbers not exceeding three on the list of those voted for as President, the House of Representatives shall choose immediately, by ballot, the President."
The Constitution makes no provision allowing for Congress not to accept the electoral votes from a state. However, a federal law does make such a provision. Let us assume, for some reason, that some future Congress would do that. That law requires that both houses of Congress reject the electors, so it won't happen this time, but let's consider a hypothetical situation where it would happen. Would the candidates need 270 electoral votes, or would they need a majority of the remaining votes? i.e if Pennsylvani's 20 electoral votes were rejected by Congress, would a candidate need 270, or 260.
In order to claim that the candidate still needed 270, you would have to say that the electors of Pennsylvania were appointed, but Congress turned them down. I think a more straightforward reading is that the Congress declared that the appointment of the Pennsylvania electors was invalid. Therefore the total number of appointed electors would be 518, so the candidate would need 260.
For this election, there is no need to even think about this possibility, as there is no chance that the House of Representatives will reject the appointment of any electors at all.
Also, the statute that allows the Congress to reject electors doesn't make any provision for going back to the states and letting them try some other way to appoint electors. That state just loses its electors. They don't count, and the state doesn't get a do-over. Of course, this assumes that the Supreme Court accepts that the statute itself is constitutionally acceptable. There has never been a ruling on it.
For the future, I think a constitutional amendment is in order to be as certain as humanly possible about exactly what happens in an election. We shouldn't be wondering how a court might rule about the phrasing of a 200 year old document in order to figure out who is going to be President. It won't happen, but it should.