Nikki Haley, a Republican presidential candidate, has cautioned her fellow GOP contenders that they are not competing against President Biden but Vice President Kamala Harris for the Oval Office. In a "Fox & Friends" interview on Monday, Haley reiterated her call for mental competency tests for older politicians and stated that if Biden wins in 2024, Harris will be running for the White House. Haley expressed her concern about the age of politicians in Washington, calling for term limits and mental competency tests for those over 75. She emphasized that these individuals are responsible for making decisions on national security and children's economic future. Therefore, they need to be at the top of their game. Haley warned that a vote for President Biden is a vote for President Harris, and the New York Times and every liberal knows it. She stated that Kamala Harris would become the President of the United States if Joe Biden won the election. Republican strategists are growing increasingly worried about Biden's ability to serve the nation after he stumbled at an Air Force event last week, less than a year after he told voters to "watch me" if they don't believe he has what it takes to fulfill his duties for another term in office. [tweet_embed]June 06, 2023[/tweet_embed] Many Republicans have questioned whether the 80-year-old Biden, the oldest person to serve as President of the U.S., is physically and mentally capable of handling the intense demands of the White House for another four years. However, several Republicans had already expressed concerns about his abilities before he fell at the U.S. Air Force Academy commencement ceremony in Colorado last Thursday. Last November, while fielding questions from reporters at the White House, Biden dismissed concerns from two-thirds of American voters who said in a poll that he should not seek re-election. When asked what his message would be to those who oppose his endeavors to seek another term, Biden replied, "Watch me." Haley's warning to her fellow GOP contenders that they are running against Kamala Harris and not Joe Biden is a significant development in the Republican Party's strategy for the 2024 presidential election. Her call for mental competency tests for older politicians and term limits will likely spark a debate within the party. With concerns about Biden's age and physical and mental capabilities growing, it remains to be seen how the Republican Party will position itself in the upcoming election.