国防部正在建立另外两个军事缓冲区沿着美国西南部与墨西哥的边界。这使“国防区”的数量达到了四个，美国军事人员可以暂时拘留非法入侵的无证移民，这些非法移民现在被认为是美国军事基地的延伸。
在缓冲区行动的美国军事人员不执行执法职责，但可以暂时拘留任何入侵者，就像在任何军事基地一样，直到他们被移交给美国海关和边境保护局人员。
空军在周三的新闻发布会上宣布，卡梅伦县和伊达尔戈县沿里奥格兰德河的250英里长的德克萨斯州边界将从国际边界和水资源委员会移交，并被视为德克萨斯州圣安东尼奥联合基地的一部分。
据一名美国官员称，另一个缓冲区将在亚利桑那州西部建立，并将被视为海军陆战队航空站尤马的一部分。
海军陆战队尚未正式宣布建立附属于尤马设施的新国防区，该官员称该区域将延伸100英里。
此前，五角大楼已经建立了德克萨斯州国防区-占地63英里-隶属于德克萨斯州布利斯堡，以及新墨西哥州国防区-占地170英里-隶属于亚利桑那州瓦丘卡堡。
美国空军周三表示，在美国北方司令部的指挥下，联合特遣部队-南部边境的成员将在这些区域内行动。
空军在一份声明中说:“他们的责任包括通过固定阵地和移动巡逻加强检测和监控，暂时拘留入侵者，直到他们被移交给适当的执法当局，并支持安装临时屏障和标志，以确保该地区的安全。”
上个月，一名联邦法官驳回非法入侵指控在发现联邦政府未能证明他们知道自己正在进入禁区后，他们在新墨西哥州的一个国防区逮捕了98名无证移民。
截至5月中旬，司法部称有60人已经认罪非法进入德州西部国防区域的指控。
Pentagon to set up 2 more military buffer zones near border in Arizona and Texas
The Defense Department is setting uptwo more military buffer zonesalong the southwestern U.S. border with Mexico. That brings to four the number of "National Defense Areas" where U.S. military personnel can temporarily detain undocumented migrants for trespassing on what are now considered to be extensions of U.S. military bases.
U.S. military personnel operating in the buffer zones do not carry out law enforcement duties, but can temporarily detain any trespassers, as they would at any military base, until they are transferred to U.S. Customs and Border Protection personnel.
The Air Force announced in a news release Wednesday that a 250-mile stretch of the border in Texas along the Rio Grande River in Cameron and Hidalgo counties will be transferred from the International Boundary and Water Commission and be considered a part of Joint Base San Antonio, Texas.
Another buffer zone will be established in western Arizona and will be considered a part of Marine Corps Air Station, Yuma, according to a U.S. official.
The Marine Corps has not yet formally made an announcement about the establishment of the new National Defense Area attached to the Yuma installation, which the official said would extend for 100 miles.
Previously, the Pentagon had established the Texas National Defense Area -- covering 63 miles -- attached to Fort Bliss, Texas, and the New Mexico National Defense Area -- covering 170 miles -- attached to Fort Huachuca, Arizona.
The Air Force said Wednesday that members of the Joint Task Force-Southern Border, under the direction of U.S. Northcom will operate within the zones.
"Their responsibilities include enhanced detection and monitoring through stationary positions and mobile patrols, temporarily detaining trespassers until they are transferred to the appropriate law enforcement authorities, and supporting the installation of temporary barriers, and signage to secure the area," the Air Force said in a statement.
Last month, a federal judgedismissed trespassing chargesagainst 98 undocumented immigrants who were arrested in one of the National Defense Areas in New Mexico after finding the federal government had failed to demonstrate they knew they were entering the restricted zone.
As of about mid-May, the Justice Department said 60 peoplehad pleaded guiltyto charges stemming from illegally entering the National Defense Area in western Texas.
