bring that money back to the states if it was taxed reasonably.

Recommend people read this article on what "taxed reasonably" is. My tldr at the bottom.

Long and short of it is that these companies earn their wealth inside US but use loopholes to claim this is foreign earned invomce. Then they stash them overseas, because if they bring it back to US they have to pay our tax (same as you do).

The wealth then accumulates for a decade, until they have trillions of dollars stashed overseas. At some point, the overseas countries want a shot at those trillions and start thinking about taxing it. At this point the companies want to bring that wealth back to the US. And a bipartisan consensus forms that instead of taxing it at a corporate tax rate of 35%, we should lower that rate for these corporations that stashed these trillions of dollars overseas that were actually earned in US to a one time special deal to 5 or 10%. They bring that money back in, at a rate far lower than you have to pay. Then the one time tax decrease is over, and the wealth accumulates overseas for another decade until they want to bring that wealth back in. At this point there is another "one time" tax holiday.

This telling story, originating from Bill Clinton on how George Bush reacted when he learned what companies did with that money they brought back into the US,

Indeed, that’s exactly what happened the last time the U.S. had a corporate tax holiday in 2004, cutting the rate on repatriated profits to 5 percent. Companies lobbying for the so-called “Homeland Investment Act” claimed it would help them hire Americans and invest in research and development. Instead they used the money for stock buybacks and increased executive compensation, while the prime beneficiaries actually cut their U.S. payroll. (According to Bill Clinton, George W. Bush was “so mad that he signed the 5.75 percent repatriation bill [and] none of it was reinvested.”)

We are in exactly this period where a lot of wealth earned in US has accumulated overseas, and those overseas countries are starting to think about taxing it. Trump, as well as the current leaders of both Democrats and Republicans, have said they will cut the corporate tax rate exactly as described above to 5% or 10% so that these corporations that hid their income for a decade don't have to pay the actual tax rate on it. This will happen this year, because both parties support it and companies are heavily pushing for it.

tldr: And that's what "taxed reasonably" means. Hide income for a decade. Lobby leaders to let you bring it back in at a special one-time tax rate of 5% (700% smaller than what it would be without this special tax rate). Repeat every decade. Have a 5% effective corporate tax rate.