mr.: thank chairman. i yield back. chairman whitfield: recognize john from texas, representative olson, for five minutes. rep. olson: ms. mccabe, welcome back. we know much of the ozone america is beyond our control. epa calls this background ozone. some of this ozone is natural. here. a slide this was houston. ozone. that is not our some belongs to mexico. --get it to cause of annual we get it because of annual crops of earnings. -- crop burnings. i have another poster. the last time ms. mcarthur was here, i showed her this snap of ozone pouring into america from china and asia. in your proposal, you admit that ozone from mexico and china can be a huge problem. ,our rules says, and i quote there are times when ozone levels approach or exceed the concentration levels eating proposed -- being proposed in large part due to background sources. texas, iteadville, makes us violate your new rules. that seems very unfair, ma'am. my first question is, is it true the nearly one half of ozone america is here naturally or comes from overseas? i don