If you're in the US, don't expect to ever see a non-stadium live show by a foreign band ever again, for this amongst other, more obvious reasons:
https://apnews.com/article/state-department-visa-bond-d532b186abf6e39c621d1bd0995d7509
US may require visa applicants to post bond of up to $15,000

The State Department is proposing requiring applicants for business and tourist visas to post a bond of up to $15,000 to apply to enter the United States. It's a move that may make the process unaffordable for many. In a notice to be published in the Federal Register on Tuesday, the department says it will start a 12-month pilot program under which people from countries deemed to have high overstay rates and deficient internal document security controls could be required to post bonds of $5,000, $10,000 or $15,000 when they apply for a visa. It says the countries affected will be listed once the program takes effect.

AP News
@jwz Don’t expect many people to pay that kind of money. Plenty of other countries to visit.