The "easiest" way to enter the United States isn't actually a visa at all, but the "Electronic System for Travel Authorization" (ESTA) under the Visa Waiver Program (VWP). If you are a citizen of one of the 40+ participating countries (such as the UK, Japan, Australia, or much of the EU), you can apply online and typically receive approval within minutes or hours. For those who do not qualify for an ESTA, the B-2 Tourist Visa (often combined as a B-1/B-2 for business/pleasure) is the standard and most accessible route. While "easy" is subjective because it requires an in-person interview and proof of strong ties to your home country (like a job or property), it is the most common non-immigrant visa issued. The key to a successful B-2 application is demonstrating that your visit is temporary and that you have the financial means to support yourself without working in the U.S. In 2026, many consulates have streamlined wait times, but the "easiest" experience remains the ESTA for those eligible, as it bypasses the need for a formal embassy visit and a 10-year visa sticker.