49 U.S.C. § 30145
Importing motor vehicles or equipment requiring further manufacturing
Section 30112(a) of this title does not apply to a motor vehicle or motor vehicle equipment if the vehicle or equipment—
(1)
requires further manufacturing to perform its intended function as decided under regulations prescribed by the Secretary of Transportation; and
(2)
is accompanied at the time of importation by a written statement issued by the manufacturer indicating the applicable motor vehicle safety standard prescribed under this chapter with which it does not comply.
( Pub. L. 103–272, § 1(e) , July 5, 1994 , 108 Stat. 964 .)