US President Donald Trump is facing a federal lawsuit afte he and his administration used taxpayer money for self-promoting political advertisements.

The president has been hit with the lawsuit over the misappropriation of government funds to bankroll "Love Me" advertisements ahead of the upcoming midterm elections.

Federal court records revealed on Thursday show millions of dollars in taxpayer money spent on a nationwide television campaign promoting Trump ahead of the November vote.

The 31-page lawsuit, filed by the Democratic National Committee on October 7 in Washington, DC, alleges that Trump and his administration illegally diverted $20 million in federal funds to pay for self-promoting propaganda.

According to the court filing obtained by RadarOnline.com, federal officials allocated $20 million from US Customs and Border Protection funds.

These funds were originally designated for Department of Homeland Security purposes, including border security commemorations, but were instead used to finance Trump's personal "Love Me" advertising campaign, which features his image alongside claims about defeating communism and socialism.

The lawsuit asserts that the Republican president's advertisements violate federal restrictions prohibiting taxpayer funds from being allocated to publicity or propaganda for a particular political party, stating that "the partisan aim of the propaganda ads is beyond question."

Trump approval rating falls to record low ahead of US midterms

Trump’s approval rating has fallen to a record low of 32%, according to a Reuters/Ipsos poll, as Republicans face growing voter concerns ahead of the US midterm elections.

The filing points out that the taxpayer-funded advertisements continued to air even after Trump publicly announced on October 5 that his MAGA Inc. super PAC would finance future broadcasts.

The lawsuit states that at least $100,000 in public funds was spent on ads that aired after that announcement.

Meanwhile, the White House has defended the government-funded advertisements, claiming they were intended to promote US achievements.

Furthermore, a Reuters/Ipsos poll released earlier this week indicated that despite the massive advertising campaign, Trump’s approval rating has fallen to a record low of 32 percent.

Experts link the plunge in Trump's popularity to the illegal war on Iran and his failure to deliver on his promises of peace and prosperity.

This widespread public discontent with Trump's performance is causing jitters among Republicans, who are facing growing voter backlash ahead of the US midterm elections.