AUSTIN — Several more Fortune 500 companies have added their names to a growing list of businesses opposed the so-called Texas "bathroom bill."

CEOs from 10 corporations — including Uber, Lyft, Dallas-based Neiman Marcus, JPMorgan Chase, PayPal, Plano-based Frito-Lay, PepsiCo and Houston oilfield services company Baker Hughes — sent Gov. Greg Abbott a letter Thursday urging him to drop his support for the legislation.

"No industry will remain untouched by the unnecessary harm that discriminatory laws will do to our competitiveness, to our ability to attract talent, and to our employees and their families," the CEOs wrote.

"We ask for your leadership in keeping Texas open and welcoming to all."

With the addition of these businesses, 34 Fortune 500 companies have come out against the legislation, which would restrict which restrooms, showers and changing rooms transgender men, women and children could access. Amazon.com, Apple, AT&T, American Airlines, Facebook, Halliburton and IBM are also among the opponents.

Thursday's letter pointed to widespread opposition from other sectors as well, including from education groups, law enforcement and some in the faith community.

"These seem like reasons enough not to pursue this unnecessary type of regulation. But we also have ample evidence of the long-term economic harm that these so-called 'bathroom bills' will cause," the letter said.

Efforts to pass a bathroom bill failed during this year's regular legislative session, which ended in May. When Abbott called lawmakers back to Austin for a special summer session, he added the bathroom issue to his list of 20 priorities.

The Senate passed its version of the bill last week, but Republicans in the House are far less keen on debating the issue. House Speaker Joe Straus of San Antonio has called the push for a bathroom bill unnecessary and dangerous, and Rep. Byron Cook, the Corsicana Republican who chairs the committee that would first hear the legislation, has called it anti-business.

The special session is expected to last 30 days, making the last day Aug. 16.