Should the US withdraw from the UN?

Republican lawmakers have launched an effort to withdraw the U.S. from the United Nations. Wy are they saying this? What does the President think? What does the US people belive?

https://www.msn.com/en-us/news/world/no-sane-country-would-stand-for-this-lawmakers-launch-effort-to-withdraw-the-us-from-un/ar-AA1zta7Y?ocid=msedgntp&pc=ASTS&cvid=aec321029ab34854944db82cd1de1bdc&ei=73