The economics of Donald Trump’s wall

因為美國總統候選人之一Donald Trump有此一政見......

此類投資專案 (如近來的拆掉台北車站重蓋多功能大樓)的(政)經濟分析，通常屬於所謂的"工程經濟"學，此是陳寬仁老師之"專業"之一。

Building a wall 1,000 miles long and 40 feet high would require $711m worth of concrete and $240m of cement

The economics of Donald Trump’s wall

Building materials companies are poised to profit if Donald Trump builds his wall

ECONOMIST.COM