>Lawmakers could seek out experts to ask for advice, rather than the experts coming to them I guess they could spend all their time researching random problems

>Lawmakers could seek out experts to ask for advice, rather than the experts coming to them I guess they could spend all their time researching random problems, but lobbying helps vet important issues. They are representing a constituency, after all. And, in reality, good politicians do do their own research, and many even write bills and promote policy that they genuinely believe in (even when it agrees with lobbyists).