Absent other considerations, as a legal matter, you have no rights regarding your neighbor's view-blocking tree. That said, there are a couple of...

Real Estate Adverse Possession

Absent unusual circumstances, individuals who acquire title through adverse possession do not have an obligation to mark their property boundaries....

Residential property

It is unlawful for you to cut down the tree. As a general rule, your neighbor has a duty to restrain their trees from encroaching on your property...