As COVID-19 surges, the Transportation Security Administration screened 1,727,075 travelers across the U.S. on Tuesday -- the lowest number since June 15.

-ABC News' Sam Sweeney

The largest county in Texas is set to file a lawsuit challenging the governor’s mask mandate ban.

The commissioner’s court of Harris County, which encompasses the city of Houston, had the county attorney file a lawsuit challenging Gov. Greg Abbott’s executive order that prohibits local governments in the state from requiring masks, ABC’s Houston station KTRK reported.

“First responders and school leaders are speaking out and standing up as Delta ravages our community. We have their back,” Harris County Judge Lina Hidalgo wrote on Twitter. “Protecting the community during an emergency is a duty, not an option for government leaders.”

“It’s the job of local officials to protect our students, our vulnerable, our neighbors,” said Harris County Attorney Christian D. Menefee. “But [Abbott] has banned us from doing so during a pandemic. Tonight Commissioners Court authorized my office to take legal action against the governor’s overreach. Enough is enough.”

Hawaii Gov. David Ige announced new capacity restrictions on businesses and limits on social gatherings Tuesday amid a spike in COVID-19 cases and hospitalizations.

Effective immediately, bars, restaurants and gyms are limited to 50% capacity. Additionally, social gatherings are limited to 25 people outdoors and 10 people indoors.

COVID-19 case counts doubled every seven to 10 days in July, and there have been record daily highs of over 600 cases in recent days, Ige said. Hospitalizations have also increased from 48 a month ago to 219 currently.

"We need to take action, and we need to take action now,” Ige said during a press briefing.

A Centers for Disease Control and Prevention advisory panel is expected to meet later this week to discuss the possibility of COVID-19 vaccine booster shots for people who are severely immunocompromised.

The meeting of the CDC’s ACIP panel -- scheduled for Friday from 11 a.m. to 2 p.m. -- will be closely watched as the nation awaits a decision by federal regulators on whether to authorize a booster shot for certain vulnerable groups.

If the Food and Drug Administration greenlights boosters, the ACIP panel would have to make its own recommendation on who should get the shot and what factors they might want to consider. Those recommendations are typically adopted by the CDC as nationwide public health guidance.

During a meeting last month, ACIP members agreed an extra shot probably does help protect immunocompromised people but that more research was needed*.*

-ABC News' Anne Flaherty

Oregon Gov. Kate Brown said Friday she is deploying up to 1,500 members of the National Guard to help hospitals throughout the state "overstretched by patients during the delta surge."

"I cannot emphasize enough the seriousness of this crisis for all Oregonians, especially those who might need emergency or intensive care," Brown said in a video message. "When our hospitals are filled with COVID-19 patients, there may not be a room for someone needing care after a car crash or a heart attack or other emergency situation."

As of Friday morning, there were 733 people hospitalized with "severe cases" of COVID-19, including 185 patients in the intensive care unit, Brown said.

The Oregon Health Authority and the Oregon Department of Human Services are also working to provide support to hospitals, and Brown said she is requesting FEMA support.

In the meantime, the governor urged people to wear a mask while in public and get vaccinated if they haven't yet.