“all but impossible”.

Where it’s most rampant is where democrats control all of the voting and voter registration apparatus and as we’ve seen with prior investigations can frustrate the investigators completely.

Take a look at Trump’s Voter Fraud Commission and how that worked out.

Add to that the prosecutors and judges that will refuse to cooperate or find every possible excuse to dismiss charges and it becomes a huge hurdle to try and get over.

Then you get to the political fallout that follows where every effort to clean up the voter rolls is demonized to hell and back as “racist”.

If you have enough political will almost nothing is insurmountable but without it even small obstacles become sheer mountains and right now the political will simply doesn’t exist to go after them hard.

Twenty plus years of the press convincing people that there really is no problem and that all such attempts are just the hateful actions of far right white nationalists and the public simply doesn’t have the stomach to support such efforts in large enough numbers for even someone like Trump to succeed in any serious efforts to root them out.