Telling anybody associated with the government that you're thinking about suicide instantly triggers a type of panic. I think it's very similar to the situation with drug overdoses, where calling for help can often get you into additional trouble. It's very likely, IMO, that there are people who have suicidal ideation but won't talk about it because they don't want to get committed, or worse. Then they don't get any help or advice and feel even more alone and do something that may have been preventable if they'd not been too scared about the consequences of openly talking about it.