With all the debate over immigration going on, there is one area that is most critical, and that is securing our border. The best way to do so would be the fence that was planned by the Bush Administration; but unfortunately the Obama Administration scrapped that idea (only 640 miles of the 1,954 mile border have been built). Needless to say, the project must be completed.
There are tons of people coming in here illegally, and not all of them are from Mexico. Their motives for coming here illegally vary. Some want to take advantage of the welfare system. Others are involved with a drug cartel or some other criminal activity. And there are those who belong to a terrorist organization (e.g. Hezbollah) in which people from Muslim countries learn to speak Spanish, then try to pass themselves off as Mexicans, Guatemalans, etc. Meanwhile, there have been tunnels dug underneath the border for the purpose of drug trafficking, and possibly being used for other illegal (or even terrorist) activities.
Of course, the U.S-Mexico border is not the only point of entry. What about our northern border with Canada (3,987 miles long between the Canadians and the Lower 48)? Although there is less chance of illegals coming in from the north, there is still a possibility someone could try to sneak into America (despite the security measures taken by the American and Canadian authorities). Given the border’s length, it would be tempting for a smuggler or terrorist to try and find any weak spots to cross. In addition, tunnels have been found underneath our northern border (to be used for drug smuggling).
An even less likely (but still possible) point of entry for any illegal immigrant to cross would be the Alaska-Canada border (1,538 miles). Despite the terrain in some areas (not to mention not always having a suitable climate), there is a slim chance someone could brave the elements and sneak in from that direction. Of course, if that person’s destination is somewhere in the Lower 48, then that could pose a problem (unless they planned on being smuggled in).
Perhaps the least likely scenario would be someone sneaking into Hawaii or any U.S. overseas territory (e.g. Puerto Rico, Guam). Despite these areas being islands, it is still possible someone might attempt to smuggle themselves in, and then being smuggled into the Lower 48.
Finally, there are the ports of entry across the Lower 48. Despite having tight security, it is not impossible illegals could be smuggled in any of those areas.
Given all these possible scenarios, you can see why our borders must be secured.