Both unions established a foothold in the industry because they represented strategic workers in the apparel production  the skilled cutter working inside manufacturers' plants.
( ( Both unions ) ( ( ( ( established ( a foothold ) ) ( in ( the industry ) ) ) ( because ( they ( represented ( ( ( strategic workers ) ( in ( the ( apparel production ) ) ) ) ( ( the ( skilled cutter ) ) ( working ( inside ( ( manufacturers ' ) plants ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT Both) (NNS unions)) (VP (VBD established) (NP (DT a) (NN foothold)) (PP (IN in) (NP (DT the) (NN industry))) (SBAR (IN because) (S (NP (PRP they)) (VP (VBD represented) (S (NP (NP (JJ strategic) (NNS workers)) (PP (IN in) (NP (DT the) (NN apparel) (NN production)))) (NP (NP (DT the) (JJ skilled) (NN cutter)) (VP (VBG working) (PP (IN inside) (NP (NP (NNS manufacturers) (POS ')) (NNS plants)))))))))) (. .)))
The unions failed to gain traction in the industry due to a lack of skilled labor.
( ( The unions ) ( ( failed ( to ( ( gain traction ) ( in ( ( the industry ) ( due ( to ( ( a lack ) ( of ( skilled labor ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNS unions)) (VP (VBD failed) (S (VP (TO to) (VP (VB gain) (NP (NN traction)) (PP (IN in) (NP (NP (DT the) (NN industry)) (ADJP (JJ due) (PP (TO to) (NP (NP (DT a) (NN lack)) (PP (IN of) (NP (JJ skilled) (NN labor)))))))))))) (. .)))