I 116th CONGRESS 1st Session H. R. 2351 IN THE HOUSE OF REPRESENTATIVES April 22, 2019 Mr. Smith of Washington (for himself, Ms. Jayapal , Mr. Ted Lieu of California , Ms. Schakowsky , Mr. Lynch , Mr. Suozzi , and Ms. Jackson Lee ) introduced the following bill; which was referred to the Committee on Transportation and Infrastructure A BILL To direct the Administrator of the Federal Aviation Administration to conduct a study relating to ultrafine particles, and for other purposes.