The science fiction author Arthur Clarke once said "Any sufficiently advanced technology is indistinguishable from magic." Those words adorn the door of the research department at Salem Institute in America's Massachusetts. It was discovered in that very place that Apparation was actually quantum teleportation. And once it was quantified, the way was paved for experimenters to tinker with it. Unfortunately for them, British wizards payed little attention to the tinkering of the lowly Colonials. While in mid- Apparation, Dumbledore felt himself suddenly stop. The usual feeling one gets from Apparating was replaced by that of being caught in a vise.
American technomages, after having discovered just what Apparation is, proceeded to tinker and experiment with like they would with any new toy. In addition to developing heavier anti-Apparation wards, they also figured out how to detect the quantum activity indicating an imminent Apparation, and how to stop and redirect individuals who were Apparating. Albus Dumbledore, much to his chagrin, was discovering just how good the Americans were at this sort of thing.
Nikola Tesla detected the quantum shift that indicated an imminent Apparation, aimed his wand, and to his amusement stopped Dumbledore right in mid-Apparation. Upon seeing who it was, he quickly cut off the Apparation block causing Dumbledore to slam into realspace and impact against the floor of the Dursey's living room. Dumbledore was up in an instant, wand out and a spell on his lips, when he felt the Elder Wand get wrenched out his hand, and his body get slammed into the floor once again. Blinking the stars out of his vision, he reaches for his backup wand to find the damned American Tesla holding the Elder Wand in one hand, and a strange crystal and metal wand aimed at him in the other.
"This wand is property of the Peverell family, Dumbledore", Tesla said matter of factly. "When were you planning on returning it to its rightful heir?" Dumbledore replied "The Elder Wand is needed to fulfill the greater good. You will please give it back to me now." Tesla smiled. "You would like it back? Molon labe." Dumbledore's eyes lost a bit of their twinkle. "As Chief Warlock of the Wizengamot, and Supreme Mugwump of the International Confederation of Wizards, I'm charging you and Mister Evans with being an accessory to the murders of wizards Thomas Riddle and Peter Pettigrew, violating the International Wizarding Treaty, and violating the Statue of Secrecy." Evan's eyes narrowed. "That's Sir Evans of the Royal Welch Fusiliers and Special Operations Executive to you, Chief Warlock. Colonel Tesla is here at the behest of The Crown, and you of all people should know your place when it comes to matters of that nature." Indeed, Dumbledore served at the pleasure of the same people who called in that bloody American, and could not go against them without losing his magic. Evans then spoke again. "I, Sir Jonathan Corwin Evans, being the head of Clan Evans and maternal grandfather of Harold James Potter, son of my daughter Lily Evans Potter, do hereby adopt Harold James Potter into clan Evans. So mote it be!" Dumbledore's eyes lost even more of their twinkle. Vernon Dursley then spoke. "Albus Dumbledore. You are not welcome in this residence, my abode, and I command you to leave." Dumbledore thought "My hands are tied for the moment, but it is only a temporary inconvenience." He turned to the assemblage and said "Harry Potter is marked by a prophecy that must be fulfilled for the Greater Good. He needs to be raised by a proper wizarding family, and not by a squib and a muggle in order to understand his role in Wizarding Britain. As a young orphaned wizard his welfare is the responsibility of the Ministry of Magic." Tesla laughed. "As my fellow countrymen would say, that is a load of bullshit! He turned to his hosts and asked, "If I may?" At the nod from Vernon and Petunia, he waved his wand and Dumbledore found himself standing in front of the gate of Hogwarts, minus one Elder Wand, and the twinkle in his eyes gone.
Tesla turned and addressed the Dursleys. "Albus Dumbledore was once a good man. We fought together against a great evil. After the war he became a different person. He may be gone now, but he will perform his machinations in the British Ministry of Magic, and attempt to gain guardianship of Harry for his nebulous and honestly quite disturbing 'greater good'." He paused for a second, and continued. "Mister Dursley. My enterprises in America do an immense amount of business with Grunnings. When you go to work tomorrow morning, you employer will have an offer for you to become the Grunnings Executive Representative for Tesla Corporation. This position, however, will require you to relocate to America. I have been told that your record at Grunnings in both sales and engineering is excellent, and think that you would be an invaluable member of our team. America is the land of opportunity and freedom. Freedom from fear and to live your life in peace. I must be leaving now. Have a good evening sir."