In most major territories, including the United States, emulators themselves are entirely legal. They are pieces of software built from scratch via reverse engineering and do not contain copyrighted code.
Always use an ad-blocker when browsing ROM sites to avoid malicious advertisements. If a website tries to download an EXE file instead of a ROM, leave it immediately; legitimate ROMs are distributed as ZIP or 7z archives. The console itself cannot run PC viruses, but your computer can certainly get infected, and a corrupted ROM can break the emulator's functionality. wii u rom
The Ultimate Guide to Wii U ROMs: Preservation, Emulation, and Legacy In most major territories, including the United States,