While headquarters staffing is to be streamlined, the staffing levels at the ports are to be maintained or increased.
( ( While ( ( headquarters staffing ) ( is ( to ( be streamlined ) ) ) ) ) ( , ( ( ( the ( staffing levels ) ) ( at ( the ports ) ) ) ( ( are ( to ( be ( ( maintained or ) increased ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN While) (S (NP (NN headquarters) (NN staffing)) (VP (VBZ is) (S (VP (TO to) (VP (VB be) (ADJP (JJ streamlined)))))))) (, ,) (NP (NP (DT the) (NN staffing) (NNS levels)) (PP (IN at) (NP (DT the) (NNS ports)))) (VP (VBP are) (S (VP (TO to) (VP (VB be) (VP (VBN maintained) (CC or) (VBN increased)))))) (. .)))
Headquarters staff is increased and port staff streamlined. 
( ( Headquarters staff ) ( ( is ( increased ( and ( port ( staff streamlined ) ) ) ) ) . ) )
(ROOT (S (NP (NN Headquarters) (NN staff)) (VP (VBZ is) (NP (JJ increased) (CC and) (NN port) (NN staff) (NN streamlined))) (. .)))