Singapore has a wide range of local laws and customs that Americans travelling to the country should be aware of. Here is some essential information:Passports and VisasUS citizens do not need a visa to enter Singapore for business or social visits if their stay is 90 days or less. However, they must meet the entry requirements, which include having a passport that is valid for at least six months beyond the date of their intended stay. It is important to note that Singapore and some neighbouring countries require passports to have at least six months of validity remaining to enter under any circumstances.CustomsSingapore customs authorities enforce strict regulations on the temporary import and export of certain items, including weapons, illegal drugs, certain religious materials, and pornographic material. The definition of "weapon" is broad and includes items such as dive knives, kitchen knives, handcuffs, and expended shell casings. Carrying any of these items without permission may result in immediate arrest.Singapore has four types of dutiable goods: alcoholic beverages, tobacco, gasoline, and motor vehicles. Travellers entering the country must declare and pay duties on these items if they exceed the duty-free concession.Behavioural Norms and PenaltiesSingapore has strict laws and penalties for certain behaviours, including:JaywalkingLitteringSpittingVandalism (penalties include mandatory caning)Immigration violationsSex crimes or sexually inappropriate behaviour (including "insulting the modesty of women")Drunk and disorderly conductPublic demonstrations without a permitDrug-related charges (including the death penalty)Possession of firearmsChewing gum importation (except for certain medical chewing gums)Smoking in public places, including Orchard RoadE-cigarettes and vaping devicesHomosexual acts and relationships (same-sex marriage and partnerships are not recognised)Business CultureEnglish is widely spoken in Singapore, and many businesspeople are skilled, technically knowledgeable, and have travelled extensively. Business discussions are typically straightforward and transparent. Business cards are commonly exchanged during meetings, presented with both hands. When addressing a businessperson, it is polite to use their last name rather than their first name until invited to do otherwise.ClothingSingapore has a tropical climate year-round, with high humidity and frequent rain showers. Business travellers should pack summer-weight suits or dresses, dress shirts, and an umbrella. Business dress is typically a long-sleeved shirt, and a tie is not always required. Businesswomen should wear lightweight attire.TippingTipping is not customary in Singapore, as restaurants automatically add a 10% service charge and goods and services tax (GST) to the bill., To enter Singapore, travellers must meet the following immigration requirements: Singapore citizens, Permanent Residents and Long-Term Pass Holders entering via land checkpoints. Submission of SGAC is Free and can be done via the SGAC e-Service or MyICA Mobile app. Travellers who fail to submit SGAC may be denied entry into Singapore., Get to know the dos and don'ts of a visit to Singapore with this guide to health, safety and etiquette, along with tips on packing and what to prebook..