A tenth of a penny. That's what the average tax payer gives NASA each year. (Paraphrased from Neil deGrasse Tyson.) It's not a waste of money. Space travel has resulted in many bi-products that have benefited society. No, congress shouldn't NEED to congratulate Kelly, but his work, and the work of all those behind him are for the betterment of mankind, and I think it's worth the 20 seconds it would take to say "good job!"