We need to prepare for the eventuality that the Mueller probe catches President Trump, family members and associates red-handed — and Republicans in Congress refuse to do anything about it.

This is beginning to look like a possible or even probable outcome. With a cravenness matched only by its arrogance, the GOP is Trump’s party now. It no longer has any claim to be Lincoln’s.

Witness the cowardly about-face on the subject of Roy Moore’s candidacy for the Senate. The party initially took a position in line with its purported values: that a credibly accused child molester, who haunted the local mall seeking dates with teenage girls when he was in his 30s, is unworthy of the high office he seeks.