On Thursday, former President Donald Trump and current President Joe Biden both went to the

U.S. southern border. Now, they were 300-ish miles apart Texas is really, really big, but it just goes to show how big a role immigration will play for both parties in this year's election.

And something Biden and Trump both agree is a big problem

are the drugs flowing over the border,

specifically fentanyl.

Now, stopping the cartels and traffickers that bring fentanyl over the border is a tall task.

Then there's the question of how to deal with the fentanyl that's already here.

Overdose deaths remain near record highs.

So how do you stop something that has so many people already hooked?

My guest this week is CNN's Josh Campbell. He recently went to Portland, Oregon to see what one city's fight against fentanyl looks like up close.

From CNN, this is one thing.

I'm David Ryan.

Josh, tell me about Zach Dittier.

Well, this case was really every parent's worst nightmare.

Zach Didier was 17 years old.

He was a thriving high school kid, an accomplished student, an actor at the school theater,

an athlete, a musician.

And in 2020, his father, Chris, went into Zach's bedroom

in their home near Sacramento.

This is never an easy topic to talk about.

It always hurts. And Zach was slumped over his desk,

unresponsive. And as I approached him, he wasn't alive. I could feel before I even touched him that something was horribly wrong.

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