The "bathroom bill" in Texas is dead for the legislative session that ended Monday, but supporters of the measure to regulate which bathrooms transgender Texans can use are counting on Gov. Greg Abbott to give it new life in a special session.

Abbott, though, was clear Monday that whatever subjects might be included in a call for any special session is up to him, despite Lt. Gov. Dan Patrick's pleas for a special session to include the bathroom bill.

"I'll be making an announcement later this week on a special session," Abbott told reporters. "When it gets to a special session, the time and topics are solely up to the governor."

He didn't elaborate on the subjects, but Abbott acknowledged that lawmakers didn't act on routine proposals to continue the existence of five state agencies, including the Texas Medical Board, which licenses the state's doctors. Abbott has supported efforts to restrict transgender Texans to the bathroom of the gender on their birth certificate rather than their gender identity.

Business leaders say they'll continue contacting Abbott about the measure.

"We're going to continue to speak up," says Duff Stewart, CEO of Austin-based advertising agency GSD&M. "We want him to not to put that on the agenda if there is in fact a special session. We're hopeful that he will get the message that Texas business leaders don't want him to add that to the special session."

Stewart was among the leaders of 14 major companies, including Facebook, Apple, Microsoft and Amazon, that sent a letter to Abbott on Saturday, urging that such efforts be dropped.

"Discrimination is wrong and it has no place in Texas or anywhere in our country," said the letter from CEOs including Facebook's Mark Zuckerberg, Apple's Tim Cook, Hewlett Packard Enterprise's Meg Whitman and Dell Technologies' Michael Dell.

David Najjab, director of institutional partnerships at Gearbox Software, whose CEO also signed the letter, says that a few weeks ago "Tim Cook actually called the governor and spoke with him for quite a while. Others may have as well."

"What's real for us – if you're looking at recruiting – the talent pool we get are highly educated millennials and they're over 90 percent opposed to this kind of discrimination," Najjab says.

The Texas Association of Business and the Keep Texas Open for Business Coalition actively opposed moves to ban transgender-friendly bathroom policies, citing a "chilling effect" it would have on the state's economy. Estimates suggested Texas could lose as much as $5.6 billion through 2026 if such a measure became law.