[kuschku]

Just speculating: Maybe making sure that if a discussion about border controls comes up in the US, enough people know how bad it is to go through them themselves and vote against them?

[maaku]

Since when did US populace vote in border controls?

[kuschku]

Not directly, but if the population doesn’t want stronger controls, no presidential candidate will pick it up.

[maaku]

What matters is what a sitting president will do. Unfortunately that doesn't correlate very well with what presidential candidates say.