Investors fixated on earnings and monetary policy are starting to factor in another variable that could sway markets this year: the 2024 U.S. presidential election. In his State of the Union address on Thursday, U.S. President Joe Biden proposed raising corporate taxes, whereas his opponent, Republican candidate Donald Trump, signed a 2017 law that slashed taxes on companies and the wealthy. Biden also boasted of U.S. economic progress under his tenure.