If Russia invaded a sovereign country, when invading Ukraine, what would America be doing, if it invaded Venezuela ?

Russia did invaded a sovereign country.

And if America invaded Venezuela then they too would be invading a sovereign country.

That being said, I don't think anyone is seriously talking about invading Venezuela, much less actually doing it...

Getting high.

America would send empty Tankers to get filled with oil.

I’m still waiting for a single WMD in Iraq