What do you call it when loads of amendments are put forward in order to obstruct a bill? Filibuster? Stonewall? I believe there's a special term for it.
Googling "amendments to stall bill", I've run into "amendment gridlock".
thehill.com "Energy bill stalled..."
"Filibuster" means giving a long speech. "Stonewall" is for any sort of obstruction where the metaphor fits.