Why can't we deport illegals who are caught voting in elections?

We SHOULD do that! AFTER they spend some time in jail for engaging in CRIMINAL activities.

We can as far I know. But very few cases of voter fraud with illegal or even legal immigrants voting has been proven.

Because there aren't any. Only about 10 illegal voters are caught each year, and most of them turn out to be U.S. citizens who were voting illegally for various reasons. Voting by actual illegals is even rarer, to the point that it's not necessarily accurate to say "illegals", because the "s" means more than one.

Because we haven't found any.

Because you can't catch people who don't exist. When Trump came to power he set up an investigation into his claims of "massive voter fraud".

After a year, back in January, the inquiry was shut down because they failed to find any evidence.

Liberal prosecutors refuse to do it.

We can and we should.

You mean other than the fact that you can't seem to catch any who did?

You'd have to catch one. So far 0 illegals have been caught voting. However there were several members of Trump's family that were caught. Maybe we should deport them instead.

Because Trump needs their votes to win