Having certain ties to the US (such as a US phone number or regular transfers to or from a US account) are considered "US indicia". Having them triggers a requi

Having certain ties to the US (such as a US phone number or regular transfers to or from a US account) are considered "US indicia". Having them triggers a requirement (thanks to FATCA) for the bank to verify your status as a non-US person. Usually this means furnishing a W-8BEN to the bank. This applies even if you're not a US citizen and never set foot in the US.