Major changes in security could be coming to Charlotte Douglas Airport.

The Senate just passed a bill allowing private companies to take over for the TSA.

The bill allows airports to switch to private companies for screeners. The TSA must allow U.S. airports to switch unless it can show the move would not be cost-effective and would be detrimental to security.

Last year, TSA Administrator John Pistole froze the number of airports using non-government screeners at 16.

TSA critics, including Charlotte Douglas Airport Director Jerry Orr, believe private security would be friendlier, more efficient and save taxpayer money.

The airport issued this statement:

“The airport is interested in reviewing the legislation approved by the U.S. Senate today which addresses security screening at airports. Aviation Director Jerry Orr addressed Congress this past summer and requested options to current screening processes.”

The existing market for private screeners is about $144 million per year, compared with $2.9 billion per year spent on TSA screeners.

The bill is headed to President Barack Obama for his signature.