I can see a lot of uses for macros, but in this case C# has a "using" keyword and the designers have put a lot of thought into it and how it is called in a wide variety of situations. Lisp was a language developed in a world when people worked on their own cars, like me. I would have loved Lisp if I had found it earlier, like about the time I rebuilt my VW engine in the 80's.
Many of the language simplifications on more recent C# versions, code generators, Rosylin analysers, expression trees are all features that in Lisp boil down to one thing, macros.
