New_JJ Day_NNT1 on_II Climate_NN1 Change_NN1 In_II one_MC1 dramatic_JJ stroke_NN1 ,_, President_NNB Obama_NP1 has_VHZ removed_VVN any_DD doubts_NN2 that_CST he_PPHS1 intends_VVZ to_TO break_VVI sharply_RR from_II President_NNB George_NP1 W._NP1 Bush_NP1 's_GE policies_NN2 on_II yet_RR another_DD1 vital_JJ issue_NN1 --_NN1 this_DD1 time_NNT1 repudiating_VVG Mr._NNB Bush_NP1 's_GE passive_JJ approach_NN1 to_II climate_NN1 change_NN1 ._. 
At_II a_AT1 news_NN1 conference_NN1 on_II Monday_NPD1 ,_, Mr._NNB Obama_NP1 directed_VVD the_AT Environmental_JJ Protection_NN1 Agency_NN1 to_TO consider_VVI immediately_RR California_NP1 's_GE application_NN1 to_TO set_VVI its_APPGE own_DA rules_NN2 on_II greenhouse-gas_JJ emissions_NN2 from_II cars_NN2 and_CC trucks_NN2 ._. 
Mr._NNB Bush_NP1 had_VHD rejected_VVN that_DD1 application_NN1 ._. 
Once_CS California_NP1 receives_VVZ permission_NN1 to_TO move_VVI ahead_RL --_JJ as_CSA it_PPH1 surely_RR will_VV0 --_NN1 13_MC states_NN2 ,_, and_CC possibly_RR more_RRR ,_, are_VBR expected_VVN to_TO impose_VVI similar_JJ rules_NN2 ._. 
The_AT result_NN1 will_VM be_VBI to_TO force_VVI automakers_NN2 here_RL and_CC overseas_JJ to_TO begin_VVI producing_VVG cars_NN2 and_CC trucks_NN2 that_CST are_VBR considerably_RR more_DAR fuel_NN1 efficient_JJ than_CSN today_RT 's_GE models_NN2 and_CC on_II a_AT1 faster_JJR timetable_NN1 ._. 
The_AT California_NP1 decision_NN1 is_VBZ of_IO great_JJ significance_NN1 not_XX only_RR for_IF that_DD1 reason_NN1 but_CCB for_IF what_DDQ it_PPH1 says_VVZ about_II Mr._NNB Obama_NP1 's_GE commitment_NN1 to_II the_AT cause_NN1 of_IO reversing_VVG the_AT rise_NN1 in_II greenhouse_NN1 gases_NN2 ._. 
Mr._NNB Bush_NP1 began_VVD his_APPGE tenure_NN1 by_II breaking_VVG a_AT1 campaign_NN1 promise_NN1 to_TO regulate_VVI carbon_NN1 dioxide_NN1 and_CC by_II withdrawing_VVG the_AT United_NP1 States_NP1 from_II the_AT Kyoto_NP1 agreement_NN1 on_II climate_NN1 change_NN1 ._. 
Mr._NNB Obama_NP1 begins_VVZ his_PPGE with_IW a_AT1 clear_JJ signal_NN1 that_CST he_PPHS1 will_VM not_XX hesitate_VVI to_TO use_VVI the_AT regulatory_JJ levers_NN2 provided_VVN by_II the_AT Clean_JJ Air_NN1 Act_NN1 and_CC other_JJ federal_JJ statutes_NN2 to_TO fight_VVI global_JJ warming_NN1 ._. 
California_NP1 has_VHZ long_RR had_VHN the_AT right_NN1 to_TO set_VVI stronger_JJR air_NN1 pollution_NN1 standards_NN2 than_CSN the_AT rest_NN1 of_IO the_AT nation_NN1 ,_, provided_CS it_PPH1 has_VHZ federal_JJ permission_NN1 ._. 
Its_APPGE earlier_JJR requests_NN2 to_TO set_VVI stronger_JJR air_NN1 pollution_NN1 standards_NN2 were_VBDR routinely_RR approved_VVN ,_, but_CCB in_II this_DD1 case_NN1 the_AT Bush_NP1 administration_NN1 said_VVD no_UH ,_, dredging_VVG up_RP all_DB manner_NN1 of_IO arguments_NN2 to_TO support_VVI its_APPGE case_NN1 ._. 
One_PN1 was_VBDZ that_CST California_NP1 had_VHD not_XX demonstrated_VVN "_" extraordinary_JJ and_CC compelling_JJ "_" reasons_NN2 to_TO limit_VVI greenhouse_NN1 gases_NN2 ;_; another_DD1 was_VBDZ that_CST a_AT1 national_JJ regulatory_JJ system_NN1 was_VBDZ preferable_JJ to_II state-by-state_JJ laws_NN2 --_NN1 even_CS21 though_CS22 the_AT administration_NN1 itself_PPX1 had_VHD shown_VVN no_AT interest_NN1 whatsoever_DDQV in_II a_AT1 national_JJ system_NN1 ._. 
In_II a_AT1 companion_NN1 move_NN1 ,_, Mr._NNB Obama_NP1 directed_VVD the_AT Transportation_NN1 Department_NN1 to_TO finalize_VVI the_AT interim_JJ nationwide_JJ fuel-efficiency_JJ standards_NN2 called_VVN for_IF in_II the_AT 2007_MC energy_NN1 bill_NN1 ._. 
These_DD2 standards_NN2 would_VM eventually_RR require_VVI fuel-efficiency_JJ increases_NN2 in_II the_AT American_JJ car_NN1 and_CC light-truck_JJ fleet_NN1 to_II roughly_RR 35_MC miles_NNU2 per_II gallon_NNU1 by_II 2020_MC from_II the_AT current_JJ average_NN1 of_IO 27_MC m.p.g_NNU ._. 
The_AT California_NP1 standards_NN2 would_VM require_VVI automakers_NN2 to_TO reach_VVI the_AT same_DA 35_MC m.p.g._NNU target_NN1 four_MC years_NNT2 ahead_II21 of_II22 the_AT federal_JJ timetable_NN1 ._. 
The_AT California_NP1 rules_NN2 can_VM not_XX by_II themselves_PPX2 stop_VV0 the_AT rise_NN1 in_II greenhouse_NN1 gases_NN2 ._. 
In_II31 addition_II32 to_II33 regulatory_JJ controls_NN2 ,_, Mr._NNB Obama_NP1 must_VM eventually_RR embrace_VVI a_AT1 broader_JJR strategy_NN1 involving_VVG major_JJ federal_JJ investments_NN2 in_II clean-energy_JJ technologies_NN2 and_CC ,_, down_II the_AT road_NN1 ,_, some_DD effort_NN1 to_TO put_VVI a_AT1 price_NN1 on_II greenhouse-gas_JJ emissions_NN2 in_BCL21 order_BCL22 to_TO unlock_VVI private_JJ investment_NN1 ._. 
But_CCB after_II eight_MC years_NNT2 of_IO inaction_NN1 ,_, this_DD1 is_VBZ a_AT1 wonderful_JJ start_NN1 ._. 
