I have a US $ account with both Tangerine (formerly ING) and TD Bank. Then US $ visa card with TD Bank. Get slightly better rate buying with Tangerine, and nominally better interest rate with Tangerine. I pay an annual fee for the TD US $ visa. But if I travel min x2 to the US in a year, works best for me. Also handy to pay my WDW $200 deposit then the balance with the visa. Sure there are better systems out there.
ps avoid the Home Trust US $ visa. I've had at least 8 fraudulent charges to it this past year and had to dispute each one. No one has time for that crazy. Sounds like Home Trust hacked with mass visa fraud.