What is the best way to represent the USA in a Model United Nations?

Read press releases, speeches, texts, etc. from political leaders and diplomats (i.e. President, Vice President, Secretary of State, foreign policy senators, the UN Ambassador, etc.). You get the right feel of the language in use, what words and lines to use and so on.

This is a great question. I have represented the US more than 5 times in committee and it really varies on the committee and the kinds of delegates you encounter, however, there is some consistency in character. Most people assume the US is a bully all the time, rightfully so I agree, but in diplomacy- where you are out in the open among colleagues and people you HAVE to work with, this approach is the worst to take, especially in MUN. In MUN, you don't possess the same resources the real US does and so you can't really bully or coerce countries to do what you want- and they know this! If you're being a jerk, they're just going to leave you by yourself; no one will want to work with you. I have seen it happen to some delegates who thought that's how the US role needed to be played. It's not pretty. So, to avoid making this same mistake, don't play the BULLY. Instead, play the CONSTRUCTIVE LEADER role. The US does have a lot of clout, outside of being a bully, for all of its programs, assistance, and leadership in certain areas. Use this. Don't expect people to give you respect and believe you to be god's gift to man though; work to gain their respect by bringing these past initiatives up and discussing how they can help contribute to the topic. This means you will have to be knowledgeable about the topic and your country, so DO NOT neglect to research all this beforehand! Knowledge is a key component of credibility which will help them see you as a leader. Also, listen and give other delegates time to speak. Be open to other's suggestions. Be positive in all discussions. Be a team-player and facilitator. And most important of all, be personable. This is key to representing the US well. When I attended a conference in Lille, we were honored with a visit from a US foreign representative working in Geneva. Since we were representing the US at the time, we wanted to know what we could do to be great US delegates. He gave lots of advice, but the most valuable advice he never said. It was something you needed to observe. Whenever he encountered someone new, someone he hadn't yet spoken to, he would take an immediate interest in them. He would ask them questions about them, like name, school, what they were studying, how they liked the conference, etc. He would engage in a conversation with them, and ultimately make the other person feel important and assured that they were talking to someone who cared. He was an excellent diplomat for that reason. Although most people assume the US would be a bully in committee, it in fact is not; it's more like he US representative I just discussed. The US ambassadors and diplomats are great communicators and diplomats because they know how to talk to people, and this power of persuasion is the key to representing the US well in committee. This soft power helps you be credible, build allies, build relationships, do some great work in committee, and stand out in committee. In this way, you aren't a bully- you're not in committee to destroy other's work or ideas, or their confidence to achieve what you want- you are a builder, and if we need anything in this world it's more builders. Builders who will help build bridges across divides, facilitate the work of others, construct great ideas to many of the world's problems, and bring people together. So be this kind of US instead of the other. I assure you it will make conference more fun, and you'll stand out in committee by being a good diplomat.

Depends on the committee and the discussed topics. Tell me these, and I can tell you more =) I have many friends who represented USA in the past, in different committees and on different topics, so if you give me some more specific information I can also get their advice