Where they stand on the issues

Health care:

• Cornyn supports legislation that would bar insurers from denying coverage to those with pre-existing conditions, from charging them higher premiums and from excluding pre-existing conditions from coverage. It would allow insurers to impose annual or lifetime coverage limits, exclude benefits such as maternity and mental health care and sell plans without limits on out-of-pocket costs, among other things. He played a leadership role in the GOP’s failed effort to repeal the Affordable Care Act in 2017 and since has said the law has “become increasingly unaffordable.”

• Hegar has said she had the best health care when she was in the military and wants that type of government health care to be available to all Americans, arguing that with a Medicare-like option, private insurers will have to “get better to be able to compete.”

Energy and environment:

• Cornyn has acknowledged climate change is a problem and supports incentives for the energy industry to work on clean energy innovations.

He’s among the top recipients of money from the oil and gas industry in Congress.

• Hegar has said climate change is one of the biggest threats to national security and to future generations. She says she wants to see aggressive action, though she does not support some Democratic proposals like a fracking ban or the Green New Deal.

Immigration:

• Cornyn supports building a border wall and has voted for legislation to withhold some federal funding from so-called “sanctuary cities.” He has been a vocal supporter of protections for some immigrants brought to the country illegally as children, known as Dreamers, though he has been criticized for opposing standalone legislation that would keep those protections in place. He has said comprehensive immigration reform is “probably not in the cards.”

• Hegar has called for an end to family separation policies and a path to citizenship for Dreamers. She has said “the way we’re treating people at our border” is a national security threat. She has not supported calls to defund Immigration and Customs Enforcement and has said law enforcement and border patrol “need to be in this conversation, too.”

Guns:

• Cornyn sponsored the socalled “Fix NICS Act,” which tightened requirements for states and federal agencies to report criminal history data to the FBI’s National Instant Criminal Background Check System. He has said the legislation led to a roughly 400 percent increase in record submissions from federal agencies.

He also is pushing legislation aimed at curbing gun violence by cracking down on people selling guns illegally and expanding mental health programs. It leaves out measures such as red flag laws and tightening background checks for gun purchases.

• Hegar has called for expanding background checks, stricter safe storage laws and banning the sale of assault-style weapons. She is one of the few candidates nationally also pushing for an end to open carry laws permitting firearms to be carried freely.