Liberals are upset with Trump's EO on elections because it threatens to withhold federal money from jurisdictions which don't crack down on voting by non-citizens

Whether liberals will address this head on, however, remains to be seen. They may simply challenge the meddling of the executive in a matter the constitution reserves to the states.

The Supreme Court has consistently deferred on this to the states, even during all the election controversy of 2020, rebuffing Trump over and over again, and is likely to do so again, which would be yet another defeat for Trump.

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.

-- Article I, Section 4, clause 1

Trump promises more EOs on elections in the future.

He's already issued 100 of them. And the next guy can issue 100 overturning them. 

This is all theatre. Republicans' narrow majorities in the House and Senate make any of these becoming permanent law extremely unlikely.

 Trump signs order seeking to overhaul US elections, including requiring proof of citizenship

Making it easier to vote makes it easier to commit fraud

Ending Election Fraud

The Denver Post defends the right of anyone to request and receive public voter records, including President Trump

Here:

Withholding public records simply because you don’t like the president or because he is investigating election fraud sets a terrible precedent and is perhaps illegal.

If liberalism stands for dishonesty and lying as Pharrell Williams says . . .

. . . then election fraud cannot be far behind. And theft, murder, and treason.

Quoted here:

“Has [Hillary] been dishonest about things? Sure. Have you?” Williams said of Clinton, before insisting that “she don’t lie no more than any other politician does.”

Obama boasted Democrat control of voting machines in Ohio in 2008 would help prevent election fraud

What he meant was ensure it.

Here.

John McCain lost Ohio by 262,000 votes in 2008, out of 5.722 million cast.