Lindsey Graham in Fox News Sunday interviews during 2020

On Free Trade: China has more to lose in trade war than US

GRAHAM: I see China's hands all over this. We are in a fight with China. We buy $500 billion worth of goods from the Chinese. They buy $100 billion from us. They cheat and President Trump wants to change the economic relationship with China. So, if I were President Trump, I would not let China use North Korea to back me off of the trade dispute. We've got more bullets than they do when it comes to trade. We sell them $100 billion; they sell us $500 billion; we can hurt them more than they will hurt us. And all we're looking for is for them to stop cheating when it comes to trade. There's no doubt in my mind that it's the Chinese pulling a North Koreans back. And to our North Korean friends, can't say the word friend yet.

On War & Peace: Keep 2,000 US troops in Syria so ISIS won't come back

GRAHAM: Given Russia's behavior, absolutely not. Russia was supposed to make sure that Assad had no chemical weapons. The last thing you can rely upon is the Russians to take care of American-Israeli interests. There is a deal to be had in Syria. Our troops in northeastern Syria working with the Syrian Democratic forces, Arabs and Kurds, have demolished ISIS and if we stay there, we have about 2,000 troops, ISIS won't come back. If we stay in northeastern Syria, Iran can't march from Tehran to Beirut. Our presence in northeastern Syria is an insurance policy against Assad taking over Syria and ISIS coming back and the Iranians owning the whole region.