法院对特朗普总统紧急宣布的挑战，即在美国和墨西哥之间建造57亿美元的边界墙正在增加。

Attorneys general from 16 states with Democratic governors, plus Maryland, on Feb. 18 filed a lawsuit in a federal district court in California challenging Trump’s action and the attempt to use funding appropriated by Congress for other purposes to construct the wall.

Three environmental groups—the Defenders of Wildlife, Center for Biological Diversity and the Animal Legal Defense Fund—on Feb. 16 challenged Trump’s declaration in federal district court for the District of Columbia, on similar grounds.

此外，倡导集团公民公民于2月15日代表Frontera Audubon协会和三名南德克萨斯州土地所有者提起诉讼。

美国相关总承包商总法律顾问迈克·肯尼迪（Mike Kennedy）表示，那些期望任何法院做出明确决定的人可能会感到失望。

肯尼迪说，可能用来证明政府案件合理的法规中的许多语言都是模棱两可的，并且没有建立法律来澄清总统的权威是什么。

“I think the courts will make as narrow a ruling as they can make,” he adds. “You’re going to see courts carefully parsing legislative language.”

三个环境组织认为，边界墙将对居住在边界附近的野生动植物，尤其是栖息地分为边界的物种会产生负面影响。

Trump invoked the National Emergencies Act and immigration law in his Feb. 15 declaration to build the barrier. Under the administration’s plan, most or all of the funds would be diverted from money appropriated in previous years for military construction projects, or U.S. Army Corps of Engineers civil-works projects.

Rylander says that the litigants are seeking to get a clearer picture of where and how the funds would be allocated. “The administration has made so many conflicting statements about what money was going to be used and when,” he says. Nearly $1 billion in funds already appropriated for building a border fence have not been used, he notes.

李总统已经宣布st 58 states of emergency since the National Emergencies Act was enacted more than 40 years ago. Most relate to sanctions or export restrictions.

All of the recent spate of lawsuits contend that the president lacks the authority under existing law to use the emergency declaration to circumvent the will of Congress to pay for the wall. “Declaring a national emergency when one does not exist is immoral and illegal,” New York Attorney General Letitia James said in a statement.

各州声称，该宣言超出了行政办公室的权力，违反了美国宪法和联邦法规，并将非法和违宪地转移国会为其他目的拨款的联邦资金。

Joining New York and Maryland in the states’ lawsuit are California, Colorado, Connecticut, Delaware, Hawaii, Illinois, Maine, Michigan, Minnesota, Nevada, New Jersey, New Mexico, Oregon and Virginia.

The cases in the U.S. District Court for the D.C. Circuit have been assigned to Judge Trevor McFadden, a 2017 Trump nominee.