Indeed, opportunistic political voices have worked hard to make a connection between crime and immigration where none exists. Forget the rhetoric for a moment and consider the facts. In 2008, the Immigration Policy Center found that on the national level, U.S.-born men aged 18 to 39 are five times more likely to be incarcerated than immigrants. While the number of undocumented immigrants in the country doubled between 1994 and 2005, violent crime declined by nearly 35 percent and property crimes by 26 percent over the same period.

Unfortunately, this information doesn't change the way people think about immigration. It's become a gut reaction issue. If you think immigrants are criminals, then a law targeting anyone "reasonably suspected" of being an immigrant sounds like a good idea. Even though prominent officials at all levels - from President Obama to border county sheriffs - have called the law unjust and counterproductive, there will always be a constituency for this kind of punitive measure.

Turning immigrants into scapegoats for every social and economic setback is not what America should be about. The new Arizona law has introduced the unspoken word "race" into the debate. By promoting racial profiling as a legal tool, it has effectively unmasked a very real motivation for some people to oppose meaningful immigration reform.

I believe we need comprehensive, nationwide immigration reform, and while we continue to debate what that should look like, I believe the laws of this country should be enforced and respected. Those laws include the principle that the federal government, not state or local authorities, sets immigration policy. States can no more supersede federal immigration law than enter into their own treaties with foreign governments. By inventing a new way for local officials to treat American citizens as potential criminals, Arizona has violated that principle. The state has said, in effect, that if you're walking down the street and forgot your wallet at home, you could be hauled downtown because you look like an undocumented immigrant. That's not how the rule of law works in this country.

On a practical level, local law enforcement agencies do not have the manpower or financial capacity to serve triple duty as street cops, Border Patrol agents and Immigration & Customs Enforcement officers. Conservatives who worry about government overreach and unfunded mandates should be up in arms about this law. Their silence is disappointing. This is not a left-right issue, it's a question of basic Constitutional process.

Voters should not be blind to the troubling aspects of this law: it sets a legal precedent that anyone "reasonably suspected" of a crime is subject to questioning and search without a warrant, and it suggests that other states should feel free to invent their own immigration laws. This is not a road we want to travel any further down than we already have. This law should be overturned without delay, and Congress should take up comprehensive reform the same day.

As far as what that reform should look like, I remain a proud co-sponsor of H.R. 4321, the Comprehensive Immigration Reform for America's Security and Prosperity Act of 2009. That bill takes a broad-based approach. It would protect our borders by requiring the development and implementation of border security initiatives, including information-sharing, international and federal-state-local coordination, technology exchanges, anti-smuggling initiatives, and other actions to secure the borders. It creates new opportunities for young people who were raised here, worked hard in school, and want to pursue higher education or serve their country in the military to adjust their immigration status. It requires employers to comply with new employee document verification requirements and creates a phased-in electronic employment verification system. It creates a path to legalization by requiring undocumented immigrants to register with the government, submit to a criminal background check, pay any back taxes and speak English.

This is what real reform looks like: focusing on the realities of our immigration system, not the myths and falsehoods that have led us to where we are now in Arizona.

Cross-posted from Huffington Post.