Cite as: 529 U. S. 861 (2000)
Opinion of the Court
which we reject, see, e. g., post, at 901-904 (suggesting that pre-existing risk of "no airbag" liability would have made FMVSS 208 unnecessary); and others, if we understand them correctly, seem less than persuasive, see, e. g., post, at 902 (suggesting that manufacturers could have complied with a mandatory state airbag duty by installing a different kind of passive restraint device). And in so concluding, we do not "put the burden" of proving pre-emption on petitioners. Post, at 907. We simply find unpersuasive their arguments attempting to undermine the Government's demonstration of actual conflict.
One final point: We place some weight upon DOT's interpretation of FMVSS 208's objectives and its conclusion, as set forth in the Government's brief, that a tort suit such as this one would " 'stan[d] as an obstacle to the accomplishment and execution' " of those objectives. Brief for United States as Amicus Curiae 25-26 (quoting Hines, supra, at 67). Congress has delegated to DOT authority to implement the statute; the subject matter is technical; and the relevant history and background are complex and extensive. The agency is likely to have a thorough understanding of its own regulation and its objectives and is "uniquely qualified" to comprehend the likely impact of state requirements. Medtronic, 518 U. S., at 496; see id., at 506 (Breyer, J., concurring in part and concurring in judgment). And DOT has explained FMVSS 208's objectives, and the interference that "no airbag" suits pose thereto, consistently over time. Brief for United States as Amicus Curiae in Freightliner Corp. v. Myrick, O. T. 1994, No. 94-286, pp. 28-29; Brief for United States as Amicus Curiae in Wood v. General Motors Corp., O. T. 1989, No. 89-46, pp. 7, 11-16. In these circumstances, the agency's own views should make a difference. See City of New York v. FCC, 486 U. S. 57, 64 (1988); Hillsborough County v. Automated Medical Laboratories, Inc., 471 U. S. 707, 714, 721 (1985); De la Cuesta, supra, at 158; Blum v. Bacon, 457 U. S. 132, 141 (1982); Kalo Brick, supra, at 321.
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