Schumer threatens to kill funding deal if House Republicans attach elections bill requiring photo ID, citizenship proof

I was wrong. 

Apparently as per the Constitution the federal government can regulate time place and manner of elections for the house of representatives. And can do time and manner regulations for the Senate. 

Article 1 section 4 states:

The Times, Places and Manner of holding Elections for Senators and Representatives, shall be prescribed in each State by the Legislature thereof; but the Congress may at any time by Law make or alter such Regulations, except as to the Places of chusing Senators.

To my knowledge there are no provisions that allow them similar power over presidential elections.

I don't think that times, places, or manner have anything to do with voter eligibility. There was no such thing as personal identification back then, so voters applied for the rolls with signatures and often, affidavits that they were residents of the jurisdiction in question.

Voter registration and eligibility are still up to the states, as "manner" refers to the method by which the election is held. That, of course, was by secret ballot, but there was nothing prohibiting, say, a gathering(s) and a show of hands. 

So the way to cut the Gordian knot is: the Constitution doesn't mention voter ID, so it's up to the states to require it or not. Trump has no power or authority in that regard. Full stop.

Comments I made previously were under the impression that the federal government could not regulate time place or manner.

I was wrong about that. So I wanted to admit my error and correct myself. 

I do not think that this grants the federal government the power to decide eligibility. 

I do not think that this grants the federal government the power to decide eligibility

Number of times the word “Citizen” is mentioned in the Constitution: Twenty-four.

https://thelibertarianrepublic.com/we-the-people-constitutional-personhood-citizenship-and-gender-neutral-language/

Shouldn't the gov't have the right to insure that only citizens vote?

That is up to the states. The language is clear. You might be ignorant of the clause that states that powers not specifically allocated to the federal government belong to the states.

I keep trying to educate you, but it's like trying to teach a dog calculus.

Once the govt set up requirements for minimum age, eliminating discrimination, poll taxes etc that opened the door to things such as voter id.

Go back to tying childrens 1st grade shoes, assuming that is really your job.

But those things were done through constitutional amendments. 

That did not "open the door" for the federal government to exceed its authority. Those requirements you mention were the result of constitutional amendment. Even Trump can't just amend the Constitution. Or violate it.

But the govt can pass laws to protect citizens. Passing voter id for example is way to protect that the govt is elected by citizens. 

Redundant. Voter registration verifies citizenship, and signatures on ballots verify their legitimacy.

You still weasel away from the question of exactly how an unregistered voter could cast a ballot and have it be counted.

You still weasel away from the question of why someone would risk felony prosecution by casting an illegal vote.

How about it, Tom? Coward!

Please walk us through the process whereby a non-citizen can cast a vote AND have it counted.

You can't, can you? So you're advocating stripping away voters' rights in order to chase a phantom.