A single immigrant can begin a chain that could ultimately bring in dozens of increasingly distant relations.
单独的侨民可以一个连锁为开端，最终带来许多关系不大的远亲。
Because these individuals are admitted solely on the basis of family ties – not skill or not merit
因为这些人被允许进入美国只以家庭关系为基础，而非技能或功绩。
most of this immigration is lower-skilled, putting great strain on federal welfare.
大多数这类移民是技能较低、给联邦福利增添巨大压力的。
And because there is no real selection criteria, the current system is totally incompatible with national security.
因为没有真正的选择标准，当前系统与国家安全格格不入。
This week, a terrorist exploded a pipe bomb on a busy subway passage during rush hour in New York City, injuring innocent Americans.
本周，在交通高峰时间，一名恐怖分子在纽约一条繁忙的地铁通道里燃爆了一颗土制炸弹，伤害了无辜的美国人。
This individual arrived through chain migration.
这个人是通过连锁性移民进入美国的。
In October, another terrorist drove a truck into pedestrians and cyclists in New York City, killing 8 people and wounding many others.
10月，另一名恐怖分子驾驶卡车冲向了纽约的行人和骑行者，造成8人死亡，多人受伤。
That individual came through a visa lottery.
这个人是通过抽签签证进入美国的。