Yes scalping tickets (reselling them) is illegal on the premises of the event in the United States. However, you can sell them nearby for as much as you want. You just cannot sell them inside the arena, stadium, etc or on the surrounding property.
A scalper A ticket tout.
A ticket scalper is often referred to as a "reseller" or "ticket broker." These individuals or entities buy tickets to events, often in bulk, and then sell them at a higher price to make a profit. This practice is generally controversial and may be illegal in some jurisdictions, as it can lead to inflated prices and limited access for genuine fans.
The only way you can accomplish this is to go outside of the stadium and find a ticket scalper. However, this is illegal, so if you decide to do so, don't get caught.
The Olympic Ticket Scalper - 2012 was released on: USA: 21 August 2012
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Bobby the Movie Scalper Watchmen - 2009 was released on: USA: 30 April 2009 (Los Angeles United Film Festival)
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NBA.com, StubHub.com, Tickets.com, and scalper tickets.
Being lesbian is illegal in about 70 countries of the world, mostly in Africa and Asia.
Ethics and legality go hand in hand. Being ethical guarantees being legal. Being legal does not guarantee being ethical. Being unethical is not necessary illegal. A nurse can act unethically without being illegal.