I went to see the petition you referenced and found this embedded in that petition. It was comparing our (this country's) response to other countries.
"Great Britain banned the use of lead sinkers weighing less than one ouncein 1987, due to the harm lead was causing swans, diving birds, and wading birds, andafter determining that voluntary efforts were ineffective. Reported cases of leadpoisoning in swans from the River Thames in England dropped from a peak of 107 in1984 to 25 in 1988, one year after the ban on sale of lead fishing weights (Sears and Hunt1991). "
Just seems we might give consideration to our hobby's fatherland actions.