This is almost true. North Cascades National Park is 1069 sq mi, and lovely Rhody is 1,545 sq mi. Rhody is ridiculously small.
" North Cascades, a vast wilderness area about the size of Rhode Island with jagged high peaks and more than 300 glaciers, is the only U.S. national park where stocking nonnative fish still occurs for recreation purposes, Park Superintendent Chip Jenkins said."
Link to Associate Press, who should really learn to fact check.