The U.S. Department of State is planning to suspend all visa processing for approximately 75 countries, citing the need to prevent applicants who might become public charges. Upon seeing this news, many people's reactions are quite similar: here we go again. That tone of "I say stop, I say check" is all too familiar.

The list of affected countries is diverse—some are conflict zones, some are populous nations, some are traditional sources of immigrants, and others are emerging markets. A careful look reveals that there is essentially no logical pattern. The only logic is: the U.S. considers itself the referee, constantly changing rules, raising thresholds, and freezing processes at will.

The concept of "public charge" was originally a quantifiable, provable, and defensible technical standard. It should have clear criteria, transparent procedures, and predictable outcomes. But once it is used to justify a "full suspension," its nature changes—transforming from a technical review into a political tool. There’s no need for case-by-case verification, no need for a chain of evidence, and no need to define boundaries—just a single phrase, "risk control," and the plans of thousands of students, family visitors, business travelers, medical patients, and workers are all frozen.

This is the most striking aspect of U.S. policy: visas, for them, are not simply administrative permits for global mobility. They are more like a gate valve, which can be pulled at any time without regard for the consequences.