Nik Wallenda wants to become the first person since 1910 to attempt to cross Niagara Falls on a high wire, and his bid has so far gained the backing of New York and Canadian authorities.
Earlier this month the mayor of Niagara Falls, Ontario, became the first Canadian official to publicly support his plan.
Mayor James Diodati wrote to state Sen. George Maziarz, the Republican senator for the US-controlled side of Niagara, to say that he supports the high-wire stunt because it would draw people to the area, The Buffalo News reported.
Mr Maziarz co-sponsored legislation to allow the first wire walk across the falls since 1910. The measure, which was approved by the New York Legislature last month but has not yet been sent to New York Gov. Andrew Cuomo, directs the state parks agency to write rules and regulations specifically for Mr Wallenda's walk across the Niagara River Gorge.
In his letter to Mr Maziarz last week, Mr Diodati wrote: "Bringing an act of such exceptional quality and stellar reputation as the Wallendas to Niagara Falls would be a great highlight for our city."
Niagara Falls, NY, Mayor Paul Dyster and tourism officials on the US side of the border also support the stunt, but Mr Dyster has said his economically struggling city needs to take into account concerns that the event could be perceived as a "sideshow" to the falls.
But even if Gov Cuomo signs the bill into law, Mr Wallenda would still need permission from Canadian officials if he is to end the walk in an area overseen by the Niagara Parks Commission.
The Ontario commission has denied such requests in the past.
The 32-year-old Mr.