Earlier quoted context omitted.
That's form I-94W [1] for those who are curious. We also had to promise we'd not been traficking drugs and were not planning on engaging in illegal or immoral activities, and more. I always wonder how many idiots have been denied entry because they were dumb enough/drunk enough to think it'd be fun to tick the wrong box on that form. I also love how under the Paperwork Reduction Act they have had to estimate the burd…
You misunderstand the point of the form. The point is that if later you are suspected of one of those activities, you can be deported because you lied on the form, even though it might be impossible to convict you for the activity itself.
The poor grammar is vanishingly unlikely to be unintentional, considering how many reprintings these forms must have undergone.