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Susan Collins, the Maine Republican, got straight to the point in describing the new Senate health care bill: “Still deep cuts to Medicaid in Senate bill. Will vote no,” she tweeted yesterday. “Ready to work w/ GOP & Dem colleagues to fix flaws in ACA.”

Rob Portman, the Ohio Republican and another potential swing vote, was less straightforward. “I opposed the last draft of the Senate health proposal because I had concerns about the measure’s Medicaid policies,” Portman said in a statement. Later, he followed up saying that he was undecided about whether he would support this bill.

Here’s the problem for Portman: Collins is right. The Medicaid policies are virtually identical between the revised Senate bill and the previous bill. If Portman opposed the last bill because of how it would harm Medicaid recipients — and he did — he would logically need to oppose this one, too.