A scandal involving President Trump, Ukraine and former Vice President Joe Biden has dominated headlines for days.
Last week's whistleblower complaint has reignited the push by some House Democrats to try to impeach President Trump.
Before the general debate starts Tuesday, dozens of world leaders will attend a climate action summit.
Trump officials want to investigate Hunter Biden's business dealings with Ukraine, after reports that POTUS asked Ukraine's president to do the same.
On Friday, President Donald Trump announced the U.S. sanctioned the Central Bank of Iran and two other major financial institutions.
Rep. Joe Kennedy III announced Saturday morning in East Boston that he is going to challenge incumbent Sen. Ed Markey in the Democratic primary.
The Trump administration's announcement came after Saudi Arabia and the UAE asked for help following attacks on two major Saudi oil facilities.
The Wall Street Journal reports President Trump asked Ukraine's president "about eight times" to investigate Joe Biden's son.