Industry claims that environmental laws are to blame for the decline in timber jobs in the Pacific Northwest do not hold up under close examination.

主语是Industry claims，黑色部分是其同位语从句。

【翻译】西北太平洋地区木材行业就业率的下降应归咎于环保法，该业内主张经不起严格的审查。（意为：此说法属无稽之谈）