American voters must dismiss “falsehoods and promises of higher walls”: US President Barack Obama

US President Barack Obama speaks during the 39th annual awards gala of the Congressional Hispanic Caucus Institute (CHCI) on September 15, 2016 in Washington, DC. (AFP photo)

US President Barack Obama has once again taken a swipe at Republican presidential nominee Donald Trump, saying Americans must dismiss “falsehoods and promises of higher walls.”

Obama made the remarks in his final meeting of the Congressional Hispanic Caucus on Thursday, urging voters to "band together" to reject the divisive ideals of the US presidential race regarding minorities and immigrants.  

“Throughout this political season, the talk around these issues cut deeper than in years past. It's a little more personal. It's a little meaner, a little uglier, and folks are betting that if they can drive us far enough apart and put down enough of us because of where we come from, or what we look like, or what religion we practice, that it might pay off at the polls, but that's a bet they're going to lose," Obama said.

"If we band together and organize our communities, if we deliver enough voters, then the better angels of our nature will carry the day, but it's going to take all of us," he added.

This photo taken on September 12, 2016 shows US Republican presidential nominee Donald Trump as he addresses the 138th General Conference of National Guard Association of the US at the Baltimore Convention Center in Baltimore, Maryland. (AFP photo)

In the run-up to the 2016 US presidential elections, Obama has endorsed the Democratic nominee and his former secretary of state, Hillary Clinton and condemned Trump as unfit to run for president.

The Republican nominee has been under criticism over his inflammatory remarks and policy proposals such as temporarily banning Muslims from entering the country and building a wall along the US-Mexican border.

The New York businessman’s proposal has been condemned by Muslim and human rights groups as well as his Democratic rivals and many of his Republican presidential opponents who describe the proposal as divisive, counterproductive and contrary to American values.

He is in danger of losing his grip on the Republican Party, with fears growing that the real estate mogul is heading for a “landslide defeat” to his rival Clinton in the November election.  

US Democratic presidential nominee and former Secretary of State Hillary Clinton speaks to reporters during a press conference following a campaign rally on September 15, 2016 in Greensboro, North Carolina. (AFP photo)

Recent polls have shown that the race between Clinton and Trump is tightening at both the state and national levels before the November election.

According to the NBC News/Survey Monkey tracking survey released on Tuesday, Clinton was leading Trump by only 4 points, 48 to 44 percent, among registered voters.

Clinton was leading Trump by 10 points in the same poll about five weeks ago.

Her lead over her main rival slimmed to 2 points in the poll in a four-way match-up. She received 42 percent to his 40 percent. In that scenario, Johnson earned 11 percent, while Stein bagged 4 percent.

Clinton’s growing unpopularity follows renewed focus on her use of a private email server while she served as secretary of state, as well as alleged conflicts of interest over her connections to the Clinton Foundation fundraising.

Clinton is also facing criticism over the delayed release of her pneumonia diagnosis over the weekend.

The 68-year-old former First Lady was forced to abruptly leave a 9/11 memorial in New York on Sunday due to a medical episode, stirring speculations about her well-being.