Keeping a spouse from taking money

My spouse is from another country. She has a separate bank account. Trust is lacking in our marriage and I suspect she is about to drain her account (via wire transfer amt > 10k) and run back to her homeland. I suspect this. However, once the money is in a foreign bank account, it will be too late to do anything about it. Can I have her bank place some kind of ‘hold’ on her account? She became an American citizen during our marriage. One thought would be to place some kind of ‘flag’ on her passport when/if she tries to leave or enter?

Are you separated? There isn’t anything you can unilaterally do to control her bank accounts or how she spends money she has access to. But keep in mind, you should be able to gain access to all relevant statements through discovery if you end up litigating your divorce-related issues.