Cannabis use is considered a “crime of moral turpitude”. So it’s legality elsewhere is irrelevant to the US.
However your scenario is inaccurate. Just as having a google search about murder weapons won’t bar you for life neither will search history about cannabis. They may ask why your interested in it... But learning about a crime is not equivalent to commiting the crime.
However your scenario is inaccurate. Just as having a google search about murder weapons won’t bar you for life neither will search history about cannabis. They may ask why your interested in it... But learning about a crime is not equivalent to commiting the crime.