Crawford said that legislators had heard from NASA, which expressed concern about the bill’s impact on programs to develop alternative proteins for astronauts. An amendment to the bill will address that problem, Crawford said, allowing an exemption for research purposes.

Opponents of the ban have said governments shouldn’t interfere with a nascent industry because of unfounded fears over safety concerns.

The carve-out for NASA doesn't make this bill any better. The bill is obviously stifling.

That said, I really do want some extra checks that whatever agar-like substrate meat is grown in does not leech excessive quantities of hormones (think: rBST) or other chemicals into the packaged product. I would happily eat lab-grown meat, but I want to know that it is well tested for safety.