Senate Democrats on Sunday accused Republicans of “going nuclear” to blow up the Senate rules so they can make President Trump’s 2017 tax cuts permanent.

The heated moment on the Senate floor came as Democrats made several parliamentary inquiries of the Senate’s presiding chair to lay the groundwork to challenge Budget Committee Chair Lindsey Graham’s (R-S.C.) use of a “current policy” budget baseline to score the extension of the 2017 tax cuts as not adding to the deficit.

“This is the nuclear option. It’s just hidden behind a whole lot of Washington, D.C., lingo,” Sen. Ron Wyden (D-Ore.), the ranking member of the Senate Finance Committee, declared on the Senate floor.

Republicans pushed back on that claim.

Graham argued that Democrats have previously used current-policy baselines to score bills. He pointed to former Senate Budget Committee Chair Kent Conrad’s (D-N.D.) use of a current-policy baseline to pass a........

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