Rep. Lamar Smith accused the Environmental Protection Agency on Thursday of cherry picking the science it uses to develop its regulations.

The Texas Republican spoke during a hearing held by the House Committee on Science, Space and Technology, which he chairs. He said the ozone regulation handed down by the EPA earlier this month is based on science that is "nothing more than political rhetoric."

"Good science should dictate policy," Smith said. "However, it appears that the EPA conveniently cherry-picks the science that supports its extreme agenda. This is not sound science; it is science fiction."

The National Ambient Air Quality Standard for ozone was lowered from 75 parts per billion to 70 parts per billion at the beginning of October. Ozone is the primary component in smog, and EPA's change was the first time the ozone standard had been lowered since 2008.

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