Donald J. Trump has a big speech planned this week.

The Republican presidential nominee is going to lay out his latest plan for dealing with illegal immigration.

I can hardly wait to hear what it is. Well, actually … I can wait.

The Trump immigration plan has been all over creation since the candidate rode down the escalator this past summer at Trump Tower to announce his presidential campaign.

We’ll build a wall; we’re going to make Mexico pay for it; we’ll deport all the illegal immigrants; we’ll ban Muslims from entering the country; we’ll make America “great again.”

Then in recent days he began to “soften” his approach. He might not deport all those 11 million immigrants. But he’ll still build the wall. The deportation scheme resurfaced, but it will be done “humanely.” We’ll make the immigrants “follow the law.”

Do you see a pattern here?

Neither do I … except that this clown has no clue about what kind of policy he wants to initiate as president of the United States.

I believe, too, he’s back to deporting the illegal immigrants through the deployment of what he has described as a “deportation force.”

The greatest unknown in all of this is its cost. How much is all this going to cost the U.S. Treasury, which Trump and other critics of the Obama administration say is stretched beyond its limit. We’ve rolled up all that debt, Trump says.

So, do we acquire even more debt, borrow even more money — or do we slash, if not eliminate, other essential government programs to pay for this plan? Which programs do we toss aside?

And precisely how is he going to “get Mexico to pay for the wall”?

We haven’t heard a single detail in any of this.

I’m all ears.