▁best ▁illustrated ▁by ▁the ▁important ▁support ▁he ▁offered ▁to ▁the ▁dam ming ▁of ▁H etch ▁H etch y ▁Valley ▁in ▁Y os em ite ▁National ▁Park . ▁Pin ch ot ▁used ▁the ▁r het or ic ▁of ▁the ▁market ▁economy ▁to ▁dis arm ▁critics ▁of ▁efforts ▁to ▁expand ▁the ▁role ▁of ▁government : ▁scientific ▁management ▁of ▁for ests ▁and ▁natural ▁resources ▁was ▁prof itable . ▁While ▁most ▁of ▁his ▁batt les ▁were ▁with ▁tim ber ▁companies ▁that ▁he ▁thought ▁had ▁too ▁narrow ▁a ▁time ▁horizon , ▁he ▁also ▁batt led ▁the ▁forest ▁pres ervation ists ▁like ▁John ▁Mu ir , ▁who ▁were ▁deeply ▁opposed ▁to ▁commercial izing ▁nature . ▁Pin ch ot ' s ▁policies ▁also ▁ar oused ▁opposition ▁from ▁ran ch ers , ▁who ▁opposed ▁reg ulation ▁of ▁liv est ock ▁gra zing ▁in ▁public ▁lands . ▁ ▁The ▁Ro ose vel t ▁administration ' s ▁efforts ▁to ▁reg ulate ▁public ▁land ▁led ▁to ▁blow back ▁in ▁Congress , ▁which ▁moved ▁to ▁combat ▁" P inch ot ism " ▁and ▁re assert ▁control ▁over ▁the ▁Forest ▁Service . ▁In ▁ 1 9 0 7 , ▁Congress ▁passed ▁an ▁act ▁prohib iting ▁the ▁president ▁from ▁creating ▁more ▁forest ▁res erves . ▁With ▁Pin ch ot ' s ▁help , ▁President ▁Ro ose vel t ▁respond ed ▁by ▁creating ▁ 1 6   mill ion ▁acres ▁( 6 5 , 0 0 0   km ² ) ▁of ▁new ▁National ▁For ests ▁( which ▁became ▁known ▁as ▁" mid night ▁for ests ") ▁just