[header] How to contact the president of the united states [title] Write the letter respectfully. [step] Regardless of your sentiments toward the president, or whether you're condemning or praising potus, remember that you're writing to the leader of the united states. Write an honest but respectful letter, stating your thoughts clearly and reasonably. 
Don't include any threats-overt or otherwise. [title] Format the letter according to white house rules.