Have you asked it yourself? What business does Pelosi have traipsing all over the world, costing the taxpayers millions of dollars? Name a country - she has probably been there, and on the taxpayer's dime. But why? What is her function?
She is a congressperson (1 of 435 representatives, or 535 people if you count the senate) who was elected by a relatively small number of people to represent THEM. She does not represent me, nor does she represent you if you're not in her district. Is it the function of a congressperson to travel the world at the people's expense? WHAT is she doing? What is the purpose of her visits? She is not an ambassador, she is not a negotiator. She is a congressperson from one out of hundreds of districts who represents a relatively small number of people. I never see anybody question these trips or the justification and authority behind them. It seems most Americans will put up with just about anything, without question.
Officially called "fact finding trips," but the truth? They are junkets. First class air, 5 star hotels. Been going on since trans-Atlanic flights were possible.