The GOP tax plan got a big boost from a key Republican senator

Alaska Sen. Lisa Murkowski said that she supported the repeal of Obamacare's individual mandate as part of the GOP's tax plan.
This is a positive for the tax bill, as there were concerns over Murkowski's support amid proposed changes to the Affordable Care Act.
Despite the support, there's no guarantee the mandate repeal ends up in the final bill.Alaska Sen. Lisa Murkowski, one of the handful of Republican senators who are question marks to support the GOP's massive tax