Dan Janison Melville. N.Y. Tuesday January 26, 2010. Daniel Janison,

Dan Janison has been a reporter at Newsday since 1997.

Despite having Republicans at its helm, the Senate is proving to be far from squarely behind all of GOP President Donald Trump’s stances — and even is looking to restrict some of his choices.

This week, Majority Leader Mitch McConnell (R-Kentucky) and Minority Leader Chuck Schumer (D-N.Y.) backed a bill approved 97-2 that allows Congress to block Trump from curbing or changing sanctions against Russia.

“This administration has been too eager — far too eager, in my mind — to put sanctions relief on the table,” Schumer said.

Sen. John McCain (R-Ariz.), a Russia hawk who has also taken public abuse from Trump, argued that the Moscow regime interfered in last year’s U.S. election.

“Vladimir Putin’s brazen attack on our democracy is a flagrant demonstration of his disdain and disrespect for our nation,” McCain said.

While the bill’s fate is uncertain in the House, it sends Trump a broad warning message. So does a close vote by which the Senate approved a Trump-touted weapons sale to Saudi Arabia, from which Sen. Rand Paul (R-Ky.) dissented.

By midweek, it was reported that the Senate Judiciary Committee plans to open an investigation into the circumstances under which Trump fired James Comey as FBI director.

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Whatever its outcome, such an inquiry would take away from the president’s agenda. The Senate Intelligence Committee already provided a forum for Comey’s critical testimony earlier this month. Sen. Jeff Flake (R-Ariz.) has demanded release of any “recordings” of controversial talks Comey had with the president, possibly calling a Trump bluff.

Flake, a consistent Trump critic, is facing a primary back home.

Even before Trump took the oath of office in January, the Senate chamber held an array of GOP members Trump alienated on the campaign trail: Ted Cruz of Texas, Marco Rubio of Florida, most clearly.

Some reconciliation has followed, but it is far from complete.

Republican Sen. Ben Sasse of Nebraska recently published a book called “The Vanishing American Adult.” He told Politico that Trump “comes out of a reality TV world . . . and I have lots of anxiety about whether or not that kind of world is really what we want for our kids.”

When Trump celebrated an agreement on a health care bill with the House majority, McConnell made it clear that his house would dismantle the measure — which Trump has now called “mean” and said it does not authorize enough spending.

Sen. Lisa Murkowski (R-Alaska), not known to be a Trump fan, said this week the Senate should not “move so fast that we don’t get it right.”

The Senate’s effort on the issue remains murky.