"Lead is not used in solder in the USA."
You've been misinformed. I recently bought a roll of Kester solder, a widely known and long established brand. And it says right on the box "LEAD ALLOY" and lists precautions.
Now, if an American manufacturer wants to sell goods in the EU, and California
, they may have to use lead-free solder. In California
they have even banned lead wheel
weights (for balancing car wheels) which has resulted in some national chains going entirely to less effective wheel
weights. CA says the lead weights get thrown off and contaminate the ground.
I make it a habit not to inhale while soldering.