Unfortunately for Tim, his 67-year-old Jeff is a Trump supporter.

The Florida resident is a registered Republican, who even donated $20 to Trump’s 2016 presidential campaign.

As of this writing, it’s unknown exactly when or why their falling out began.

Tim Walz frowning

In fact, Tim’s recent rise as a vice presidential hopeful has seemingly made things worse.

Jeff declared, “I’m 100% opposed to all his ideology.”

Some Facebook users clearly considered Jeff’s input important, with one writing, “Help MAGA.

Jeff Walz and wife, Laurie

Get on stage with President Trump and endorse him.”

In response, Jeff wrote, “I’ve thought long and hard about doing something like that!

I’m torn between that and just keeping my family out of it.”

Tim Walz on stage with family

He also told the New York Post that he would not be participating in any interviews.

“Hope, Gus and Gwen, you are my entire world.

And I love you,” Tim told his wife and children in his speech, perToday.

Tim’s wife and children are clearly an important part of his race for the role of vice president.

The Walz brothers grew up in Nebraska with their brother and sister.

Their sister, 63-year-old Sandy Dietrich, still lives there.