The mechanism. American Express doesn't make its money the way people assume. Its highest-margin dollars come from discount revenue — the fee merchants pay Amex every time a card swipes — and that fee is disproportionately fat on cross-border and premium-travel transactions. Amex has spent two decades building an entire franchise (Platinum, Centurion, corporate cards, American Express Global Business Travel) around affluent travelers and multinational expense accounts who cross borders constantly. Visa and Mastercard get roughly a third of their revenue from cross-border activity too, but Amex is structurally more concentrated in the premium end of that pool: inbound foreign visitors on Amex-branded cards, U.S. cardholders spending abroad, and corporate travel booked through its own agency arm. That means any policy lever that changes who can get a visa, who gets stopped at the border, or how many international business trips get booked shows up directly in Amex's billed-business line — before it ever shows up in a headline about "travel."
The expanded travel-ban proclamation that took effect January 1, 2026 — full entry/visa suspensions for 19 countries and partial restrictions on 20 more, layered on top of a separate pause on immigrant-visa issuance across dozens of nationalities — is exactly this kind of lever. It doesn't touch the volume of card swipes at a Cheesecake Factory in Ohio. It touches inbound visitor counts, foreign business travel to the U.S., and the international corporate-travel calendar that Amex's premium products are built around.