Sorry, no A-series for the States
Samsung refuses to officially sell the Galaxy A-series in the USA, pushing people to purchase the more expensive S-series or much cheaper J-series phones instead. Buying a previous gen S-series phone could get you a phone closer to the price point of an A7 or A9, but then you're stuck with an older model that will probably never see another OS upgrade.
Samsung does sell the A-series in Canada, and those models support most of the LTE bands used in the US, but if you purchase one off the gray market, good luck getting WiFi calling to work with your carrier or getting Samsung to honor the manufacturer's warranty. Some people have even reported issues getting their carrier to enable voice-over-LTE with "unsupported" phone models, so I suspect those phones will struggle with voice calls when legacy 2G/3G bands are converted to 5G in the near future.
Biting the hand that feeds IT
