The president slammed the record of Moore's Democratic opponent, Doug Jones, saying "it's bad on crime, it's awful on the border, it's awful on the military".
"Or, worse, we'll believe you but we just won't care".
It comes after a series of allegations against Moore - including that he abused a 14-year-old girl when he was a 32-year-old assistant district attorney - has led Republican central command to ostracise him.
Trump did not rule out campaigning for Moore as the December 12 special election approaches.
Trump spoke during an impromptu question-and-answer session before departing for his Mar-a-Lago club in Florida, where he will spend Thanksgiving.
Since the allegations first surfaced, Trump has largely avoided commenting on them, with the White House at first saying Moore should drop out of the race if the accusations were true. Al Franken's allegations of sexual misconduct.
Ms Corfman originally told the Washington Post how she was approached by Mr Moore outside a courthouse in Etowah County in 1979.
Several other women have come forward to accuse Moore of inappropriate sexual advances that happened when they were teenagers.
Moore has said the allegations that he systematically pursued relationships with teenage girls was an effort from the Senate's Republican leadership to undermine him.
Underscoring the potential political fallout, Arizona Republican Jeff Flake, an outspoken critic of the president, was overheard on a microphone telling a Republican mayor on Saturday: "If we become the party of Roy Moore and Donald Trump, we are toast".
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He added the business was able to add five full-time employees this year because of the shop's success over the past two years. A passport will be inside the bag with store logos and deals for the day. "I think it's gonna be a good crowd".
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Upholding the Mandal Commission recommendation that extended reservation to OBCs, the court had in 1992 capped the quota at 50%. Former ASG Vikas Singh on Thursday said the Congress fooled people promising reservation to Patidar community.
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The ad features Ivanka Trump, who said, "There's a special place in hell for people who prey on children and I have no reason to doubt the victims' accounts".
Jones, a former US attorney, has edged ahead in recent polling in the race.
The Moore campaign lashed out at the news media, Democrats and the GOP establishment in a press conference on Tuesday.
Alabama Gov. Kay Ivey, a Republican, has said that she will vote for Moore.
The strategy echoes the successful 2015 Louisiana gubernatorial campaign of John Bel Edwards, who defeated former Republican Sen.
The White House signaled Monday it wants Moore to win the contest.
"The president wants people in the House and Senate who support his agenda", Sanders said. "I felt like I was the one that was to blame", she said.
Kellyanne Conway warned Alabama voters this morning that a vote for Democrat Doug Jones in the special U.S. Senate election would be a vote against tax cuts.
A few days earlier, Conway said "there is no Senate seat worth more than a child". "I am a Republican", said Lt. Gov. Jay Dardenne in one Edwards ad.
During the 2016 presidential campaign, Trump was accused of sexual assault by a number of women after a secret recording revealed him bragging about grabbing women's genitals and kissing them without their consent.