Earlier this month Hyde-Smith was heard telling supporters at a campaign stop that she would be glad to attend a 'public hanging'.
Hyde-Smith, a Republican, is will run-off against Democrat Mike Espy on Tuesday for her senate seat.
The president also touted Monday's rallies, adding Hyde-Smith "is an outstanding person who is strong on the Border, Crime, Military, our great Vets, Healthcare & the 2nd A. Needed in D.C". A second Republican candidate running as an independent split the rightwing vote in that poll, making a Democratic gain unlikely. Some 38 percent of the state's residents are black, and Espy is trying to boost their turnout and pick up support from white voters who are uneasy with Trump or the racially tinged stories about Hyde-Smith. Kamala Harris of California and Cory Booker of New Jersey and former Massachusetts Gov. Deval Patrick - have been to MS to campaign for the former congressman who served as agriculture secretary in 1993 and 1994 under Democratic President Bill Clinton.
She is the first woman to represent MS in Congress, and Espy is seeking to become the first African-American to represent the state in the U.S. Senate since Reconstruction.
Espy, 64, served in the U.S. House of Representatives from 1987 to 1993 and as U.S. agriculture secretary in the Clinton administration from 1993 to 1994. She also supported a resolution as a state senator that praised a Confederate soldier's effort to "defend his homeland", and the Jackson Free Press reported Friday Hyde-Smith attended and graduated from a "segregation academy" set up so that white parents could avoid sending their children to an integrated school.
Trump was appearing at two rallies to help Hyde-Smith finish the final two years of the term started by Republican Thad Cochran.
Hyde-Smith says on her campaign website that she supports increasing national energy production to promote the economy and improve national security. Trump won 58 percent of the state's vote in 2016, and Hyde-Smith has tied herself closely to his presidency. Cindy Hyde-Smith (R-Miss.) to return a $5,000 donation, ESPN reported on Sunday.
Some of the same people who worked on Jones' campaign in 2017 in Alabama are now working on Espy's. Then, they fly to the Gulf Coast for a later rally in Biloxi.
A day after U.S. border agents deployed tear gas on a group of migrants after some tried to charge the U.S. -Mexico border, Trump returned to the campaign scare talk that had largely disappeared following the November 6 midterms.
Hyde-Smith believes the Affordable Care Act, also known as Obamacare, should be repealed.
On immigration, Trump defended the USA response to the border clash on Sunday, when US agents fired tear gas at migrants, some of whom had attempted to climb through fencing and wire separating the countries.
"I would encourage everyone who has social conscience about the condition that exists in this country to boycott the Giants as long as this person is a principal owner", said Burris.