USA to ban too difficult math problems? Doesn't this mean their citizens would be less safe from foreign (and domestic) spies than foreigners are from their sp

USA to ban too difficult math problems? Doesn't this mean their citizens would be less safe from foreign (and domestic) spies than foreigners are from their spies? Doesn't this mean that foreign businesses who actually care about their security would abandon their software and IT services? If they can crack it, others can, or will learn soon to, crack it.