National leaders are talking about increasing the screening of airline passengers due to rising concerns over Ebola. But Sen. Bill Nelson, D-Florida, is pushing for even more security.

Nelson met with U.S. Customs officials Wednesday morning at Orlando International Airport to talk about preventing the spread of Ebola.

In a letter to U.S. Secretary of State John Kerry, the senator said he would like to see a ban of travel to the United States under existing visas for, what he calls “unnecessary travel.”

He also suggested blocking the issuance of new visas for citizens of countries the Centers for Disease Control and Prevention identifies as areas with high rates of infections, particularly Sierra Leone, Liberia and Guinea.

“What we have is a medical emergency and we want to nip it in the bud, and so all precautions should be taken,” Nelson said.

It’s a limited number of people who would be effected.

Nelson estimates about 6,600 visas were granted to people between all three countries last year. Americans trying to leave those countries would not be effected.

“The public is right to be worried, if this thing gets out of control," Nelson said. "I don’t think its going to get out of control and I’m just making another suggestion.”

Meanwhile, Orlando International Airport is preparing for a case of Ebola.

“Public health threats have been a part of our plan for a very long time, whether it's flus, wars we have been through,” said Stan Thorton, COO with the Greater Orlando Aviation Authority.

The one change they have made in light of the concerns over Ebola…they are adding different chemicals to their cleaning regimen.

“All of our janitorial have instructions and protocol to clean up what we would call biohazards, vomit, blood any type of bodily fluid, they are trained in how to do that and they have protective gear to do that,” Thorton said.

The White House has said in the past they did not think temporarily suspending visas was necessary.

Health leaders have said they will consider increased screening options, but not flight bans from afflicted countries.