Sen. Susan Collins, R-Maine, is leaning against supporting the Republicans’ latest Obamacare overhaul bill due in part to it stripping protections for people with pre-existing conditions, according to a published report.

If she does come out in opposition, which has been widely expected, then she would be the second Republican to publicly oppose the measure, joining Sen. Rand Paul, R-Ky. Republicans would not be able to lose any more members as they need 50 votes to advance the measure, with Vice President Pence casting the deciding vote.