I not sure about xiaomi drone, but tello is mainly for home or flying around your house and backyard. U mentioned about US and scenic places (pls check if these places allow drones?). If u taking mostly selfie, with drone just a few meters away, maybe tello OK. Price wise I think it's around $150 (or less now, but no RC). But if u want to ALSO take scenic videos under windy conditions, then tello is no-no.
Others here can advise u, but first, maybe u can inform more about what type of pics and videos u intend to do, and your budget? Bear in mind that Tello, while cheap, does not come with a rc. Buy a rc, and throw in a few batteries, u are probably not far from a Spark (fly more combo is around +-700, depending on card discounts on shopee or lazada, the latter u can buy via installments with ocbc card).
I would advise at least a Spark; with tello, all u need is a gentle breeze and it might be blown out of position. Also depends on what your budget is?
Lastly, in US, the sunlight is very strong, and u might need ND filters. Not sure if such filters exist for tello even, but there are for spark and the other dji models. Plenty to check out and decide.... And invest.