Too technical and nerve-racking for my loved ones traveling across the border. The solution most people I know (who are not born in the u.s.) have landed on is don't post or share any political articles, memes or reels, especially in DMs. If someone sends you political content, delete the message afterwards. The silver lining is that eschewing that content has some mental health benefits.

I would imagine that stories, snapchat, and disappearing message features are probably safe, but I tell my loved-ones that it's not exactly clear what type of meta-data might remain on the device even using those features.