He said in a statement last month that he has "real concerns" about Gorsuch's judicial philosophy and some of his past opinions.
Democrat opposition has less to do with Gorsuch himself than with resentment over the fact that the Republican majority leadership refused to consider Barack Obama's nominee, Merrick Garland, last year.
That means abortion, gay rights, the constitutionality of government regulations, gun control, the role of money in politics and corporate concentration in the economy are all going to be rehashed with Gorsuch's views as them as the focal point.
That could start to change on Monday, when Gorsuch's confirmation hearings begin.
The first day of hearings will be devoted to picture taking, family introductions and opening statements from the 20 committee members.
Gorsuch, a coolheaded and amiable conservative federal appeals court judge from Colorado, likely will try to engage members of the Judiciary Committee without being pinned down on specifics that could trip up his nomination to the lifetime post. The Supreme Court later agreed with Gorsuch.
Gorsuch "implied that women intentionally manipulate companies and plan to disadvantage" them, Sisk said in a letter to lawmakers last week.
Leahy criticized Trump for relying on conservative groups like the Heritage Foundation and Federalist Society past year to vet and recommend his list of potential Supreme Court picks.More news: Stock Movers- FireEye Inc (NASDAQ:FEYE), Wells Fargo & Co (NYSE:WFC)
"The judge's job, our nominee says, is to deliver on the promise that 'all litigants, rich or poor, mighty or meek, will receive equal protection under the law and due process for their grievances, '" Senate Judiciary Chairman Chuck Grassley, an Iowa Republican, said.
"A good judge can promise no more than that, and a good judge should guarantee no less", Gorsuch said. What we don't know is 1) whether the Democrats ask him challenging questions, and 2) whether they'll let him get away with not answering them.
Something is seriously wrong when the judicial confirmation process resembles an election campaign for political office.
What if, for example, Gorsuch's record on the appeals court showed he voted against the plaintiff in 83 percent of immigration cases, against the defendant in 92 percent of criminal cases, denied race claims more than 80 percent of the time, and agreed with other Republican-appointed judges 95 percent of the time, Hatch said.
The looming questions for some are whether Senate Democrats will actually initiate a filibuster to block the nomination and whether Kentucky Senator and Majority Leader Mitch McConnell will shuttle such an attempt. The latter's death has left the nation's highest court with a vacancy for more than a year now.
"We're not hearing from enough of the Democratic senators that they will fight this nomination with everything they have". His appointment was blocked by Republicans.
Mr Gorsuch is seen as controversial for a variety of reasons.
As endorsement for lifetime appointments go, this could be even more significant than Tom Brady stumping for Jason Taylor to get to the Hall of Fame. Sixty seven Senators would have to vote to not give Democrats a way to oppose Mr Gorsuch's nomination. They describe Gorsuch as thoughtful, considerate and fair-minded.