In recent years, San Diego's U.S. - Mexico border area has accelerated the pace of improving infrastructure, and highway construction projects and border expansion projects have been launched one after another. The substantial increase in the capacity of crossing the border and the improvement of roads not only encourage a large number of Mexicans to yearn for cross-border consumption, but also facilitate Americans to go south to the border for shopping. In addition, due to the poor security situation in Mexico, the temptation of high-quality and low-cost goods in the major direct selling malls in the border area, and the surge of consumer groups, the future market space in the border area is very promising. This kind of trend has led the owners of retail industry, tourism industry, service industry and even casinos all over the United States to look at each other and investigate how to take a share in this geomantic treasure land.
The most recent example is that Shamrock group, headquartered in Solana beach, spent $4.55 million to buy nine acres of land next to Las America Premium Outlets, which has 125 stores, to build a new retail center. The new retail center, named outlets at the border, will start construction next year.
The American brand direct sales center itself is a successful model. Even in today's grim economic situation, its sales are also amazing. 65% of its customers come from Mexico, which is south of the border.
For Chinese who come to San Diego constantly, it is a hot spot to visit Tijuana. At the same time, with the increase of the Chinese population in Tijuana, Mexico (roughly estimated to be more than 10000), the Chinese in Tijuana have come to San Diego to explore "overseas opportunities". In recent years, due to the fact that the Chinese in Tijuana have taken some risks to settle down in the local area, more and more Tijuana Chinese have adopted the living system of "one day, two countries" by living in San Diego at night, crossing the border during the day to do business, leaving early and returning late. From this frequent border traffic, people are constantly finding that there are more potential border business opportunities to be developed.
近年来，圣地亚哥的美墨边境地区加快了改善基础设施的步伐，公路建设项目、边境关口扩建项目纷纷上马。关口过境能力的大幅提升和公路的改善，不但激励了大批墨西哥人向往过境消费，也方便了美国人南下边境购物。加上由于墨西哥境内安全态势欠佳，边境地区各大直销商场质优价廉的商品充满的诱惑，消费群的激增，使边境地区未来的市场空间十分看好。这种种趋势导致美国各地零售业、旅游业、服务业、乃至赌场业的广大业主红眼相觑，纷纷前往考察如何在此风水宝地分一杯羹。
最近一个例子，就是总部位于索拉纳海滩的仙洛克集团（Shamrock Group）砸下4百55万美金，在拥有125个商店的美洲品牌商品直销中心（Las Americas Premium Outlets）紧邻买下了9英亩土地，用来打造一个新的零售中心。新的零售中心取名为边境直销中心（Outlets at the Border），将于明年动工兴建。
美洲品牌商品直销中心本身就是一个成功的样板，即使在经济形势颇为严峻的今天，它的销售额也令人赞叹不已，其顾客群的65%来自于边境南边的墨西哥。
不断来到圣地亚哥的华人，去蒂华纳观光游览“异域风光” 堪为一大热点。同时，随着墨西哥蒂华纳的华裔人口增多（粗略估计目前已有一万多），蒂华纳华人纷纷到圣地亚哥来探索“境外良机” 也成一大走势。这些年来由于蒂华纳华人在当地定居有一定冒险等原因，已经有越来越多的蒂华纳华人采用晚上住圣地亚哥，白天过境去做生意，早出晚归“一日两国” 的生活制度。而从这频繁的边境来往之际，人们也在不断发现有更多潜在的边境商机亟待开发。