We all know that immigration — legal and unauthorized — has been a hot-button topic for a while now. This is the case even before President Obama has even seriously tackled the question of immigration reform. One of the key points of contention has been whether immigrants contribute more to American society than they receive in social services.

In recent weeks, a few new studies try to shed some more light on this question and in the process, inject a little objectivity and data into an otherwise emotionally-charged debate. The first report comes from the non-partisan Fiscal Policy Institute and as described at the Immigration Impacts blog at the Immigration Policy Center, the economic contributions of immigrants constitute a net benefit for their communities:

The report studies the 25 largest metro areas (by population) which produce nearly one half of the total gross domestic product of the country. It shows that in the country’s main metropolises, the share of the immigrant population stacks up neatly against their share of economic output. For example, immigrants are responsible for 20% of economic output and make up 20% of the population in these 25 metropolitan areas. In other words, immigrants pull their own weight.

From the report: . . . “From the Pittsburgh metro area, where immigrants make up 3 percent of the population and 4 percent of economic output, to the Miami metro area, where immigrants represent 37 percent of all residents and 38 percent of economic out¬put, immigrants are playing a consistently proportionate role in local economies.”

A second newly-released report comes from the Migration Policy Institute and examines the economic impacts of unauthorized immigrants in the U.S. Again as described by the Immigration Impacts blog, the report finds that considering the costs and benefits associated with unauthorized immigrants, both cancel each other out in the end:

The overall impact of illegal immigration on the U.S. economy is small. According to [Economics Professor Gordon Hanson, the report's author], “Illegal immigration produces a tiny net gain to the U.S. economy after subtracting U.S.-born workers’ losses from U.S. employers’ gains. And if we account for the small fiscal burden that unauthorized immigrants impose, the overall economic benefit is close enough to zero to be essentially a wash.”

Enforcement against illegal immigration is expensive. The U.S. spends approximately $15 billion annually enforcing immigration laws. A simple cost-benefit analysis indicates that the high level of spending on enforcement is not justified. . . .

MPI policy analyst Marc Rosenblum and Jeanne Butterfield of the National Immigration Forum largely agreed with Hanson, but took the argument a step further, making a strong case for legalization . . . Rosenblum pointed out that the net fiscal impact of illegal immigrants improves over time—immigrants are not only workers, but consumers, entrepreneurs, and investors, and their contributions improve over time.

This particular report basically confirms earlier research that show that legal immigrants constitute a notable net gain for American society and its economy and that taken together, unauthorized immigrants also contribute more both in the short term (through paying sales taxes, income taxes, overall purchasing power, and entrepreneurial activities) and long term (by becoming productive citizens and not having to rely on public assistance).

Finally, at New America Media, a third article on the contributions of immigrants points out that as the laws currently exist, legal immigrants are prohibited from using Medicaid (the federal healthcare program for low-income Americans), even though they pay federal taxes that help to fund such programs and that in essence, recent legal immigrants are subsidizing healthcare for everyone else:

Currently, legal immigrants, who work and pay taxes that contribute to our health care system will continue to be ineligible to receive federally-funded Medicaid services for five years. In this case, we are not talking about those who make at least 133 percent of federal poverty level and could access affordability credits like everyone else for purchasing insurance in the exchange. We are talking about immigrants with the lowest incomes. It is unreasonable and saddening that under the current health reform proposals, the people who really need it will not get it.

I am under no delusions that these reports and data will change the mind of hard-core or extremist opponents of immigration (legal and unauthorized) anytime soon. Rather, for those who are willing to consider valid, reliable, and nonpartisan research, these studies are useful in wading through some of the political ideology and seeing what the actual numbers say.

With that in mind, the time for comprehensive immigration reform has come. By comprehensive, it means that we need to focus on more than just reinforcing our border with Mexico. Instead, it also means overhauling our immigration detention system, which, a new bipartisan report finds, has a long and documented history of bureaucratic lapses, with the detainees routinely denied basic rights such as being told why they are being held.

It also means providing unauthorized citizens already in country with a path toward eventual citizenship and access to opportunities to achieve social and economic mobility, such as the DREAM (Development, Relief and Education for Alien Minors) Act (currently being debated in Congress) that would allow young immigrants without legal status who demonstrate “good moral character” to apply for citizenship.

Comprehensive immigration reform is particularly relevant and important these days as American society and the world in general continues to wrestle with the benefits and drawbacks of globalization and living in an increasingly interconnected world. As a new book titled Immigrant, Inc.: Why Immigrant Entrepreneurs Are Driving the New Economy (and how they will save the American worker) describes:

Both a revelation and a call-to-action, Immigrant, Inc. explores the uncommon skill and drive of America’s new immigrants and their knack for innovation and entrepreneurship. From the techies who created icons of the new economy — Intel, Google, eBay and Sun Microsystems — to the young engineers tinkering with solar power and next-generation car batteries, immigrants have proven themselves to be America’s competitive advantage . . . [and] will create the American jobs of the future — if we let them.

That last part seems to be the key — immigrants have much to contribute to American society and our economy, if only we let them do so, rather than trying to get rid of them.