Anticipating so many alt-right tears on this thread.
I have no sympathy for people whose political position is to threaten the wellness and livelihood of over 20 million Americans.
The 20 million figure, which is based on flimsy assumptions (although any assumption of this nature is going to be flimsy), is mostly voluntary withdrawals from the market due to repeal of the individual mandate. However, there is no question that many people (just not 20 million) would legitimately see their quality of life reduced by this bill.
Not only that, but Arch supports single payer, which threatens to simply erase private health plans for 145 million americans, without guaranteeing they will have the same access to the level of care that plan was providing them.