if the United States had used full conventional power.
( ( if ( ( the ( United States ) ) ( had ( used ( full ( conventional power ) ) ) ) ) ) . )
(ROOT (FRAG (SBAR (IN if) (S (NP (DT the) (NNP United) (NNPS States)) (VP (VBD had) (VP (VBN used) (NP (JJ full) (JJ conventional) (NN power)))))) (. .)))
The United States is unable to maximize their potential.
( ( The ( United States ) ) ( ( is ( unable ( to ( maximize ( their potential ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNP United) (NNPS States)) (VP (VBZ is) (ADJP (JJ unable) (S (VP (TO to) (VP (VB maximize) (NP (PRP$ their) (NN potential))))))) (. .)))