Final answer:
Making the border less open and more secure would have varied impacts, including affecting immigration patterns, economic conditions, and cultural relationships. Stricter border security has been emphasized as part of efforts to address illegal immigration and terrorism threats. The U.S. has experienced significant shifts in immigration policy under different administrations.
Step-by-step explanation:
The impact of the United States suddenly making the border less open and more secure would have a variety of consequences. As border security includes the protection of land borders, ports, and airports, stricter measures could be a response to illegal immigration and the threat of terrorism. Border security has been a pivotal concern, particularly after the attacks on September 11, 2001.
Under the administration of President Trump, the approach to immigration was marked by plans for a border wall, increased deportations, and reductions in legal H1B visa immigrants. Economists often argue that despite some negative effects on domestic workers, the overall benefits of immigration to the nation are substantial. The change to a less positive approach to immigration could have broad implications, influencing not just immigration numbers but also economic, cultural, and social aspects.
President Biden's administration has had a more favorable stance towards immigration than the previous administration, but significant immigration reform appears unlikely due to divided public opinion. Past efforts, like the Comprehensive Immigration Reform Act of 2006, which proposed security strengthening and a pathway to legal status for long-term undocumented residents, failed to become law. As the U.S. confronts the cultural and economic implications of immigration, any sudden shifts in border policy could significantly disrupt the current balance and provoke widespread reaction.