In my opinion, they just need to allow H1B mobility. If H1B workers could easilly switch job once they're here, then they could negotiate higher salaries. Part

In my opinion, they just need to allow H1B mobility. If H1B workers could easilly switch job once they're here, then they could negotiate higher salaries. Part of the trick is that an H1B employee cannot complain about poor conditions, or low wages, because they're dependent on the sponsoring company. If that was true, H1Bs would quickly force wages back up, and employers would once again freely compete for talent.