Sponsoring 74 y/o Mother From Canada-Medicare eligibility

I am planning on sponsoring my 74 y/o mother with Canadian citizenship who lives in Canada to come live in the USA. Does anyone have experience doing this?

I am curious if the only option for Medicare is to pay the full part A premium which I believe is $451 monthly? Are there any treaty allowances which would provide for a reduced rate? She receives CPP and OAS in Canada.

Thanks for any replies!

Nope. She has no medicare rights being from canada. She will need to be in US asa PR for FIVE years before she can even BUY her share of PART A.

btw, if you still want to go thru with thsi, her CPP and OAS will be paid in US, in USD direct deposited to her US bank, and no longer taxed in canada at all (just US).

maybe she can marry....