Things similar to the Wright Flyer are still allowed by default in the US in similar geographic areas. The weight limit under FAA regulation part 103 is lower -

Things similar to the Wright Flyer are still allowed by default in the US in similar geographic areas. The weight limit under FAA regulation part 103 is lower - 254 pounds empty weight, rather than the Wright Flyer's 605 pounds empty weight - but material science has advanced since then, so the restriction isn't that severe. Ultra-light aircraft is very much regulated under philosophy of "if you aren't endangering others, well, it's your funeral". Source: I've halfway convinced myself to shell out the $10k or so for a motorized paraglider rig + lessons. Pretty much what I'd need to do is sign up for lessons, buy gear, and make sure I stay out of the way of big planes and protected wilderness areas. I don't technically need to sign up for lessons, but, well, it's my funeral.