The President's Speech on Immigration for July 1, 2010 (VIDEO)

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In sum, the system is broken. And everybody knows it. Unfortunately, reform has been held hostage to political posturing and special-interest wrangling -– and to the pervasive sentiment in Washington that tackling such a thorny and emotional issue is inherently bad politics.

Just a few years ago, when I was a senator, we forged a bipartisan coalition in favor of comprehensive reform. Under the leadership of Senator Kennedy, who had been a longtime champion of immigration reform, and Senator John McCain, we worked across the aisle to help pass a bipartisan bill through the Senate. But that effort eventually came apart. And now, under the pressures of partisanship and election-year politics, many of the 11 Republican senators who voted for reform in the past have now backed away from their previous support.

Into this breach, states like Arizona have decided to take matters into their own hands. Given the levels of frustration across the country, this is understandable. But it is also ill conceived. And it’s not just that the law Arizona passed is divisive -– although it has fanned the flames of an already contentious debate. Laws like Arizona’s put huge pressures on local law enforcement to enforce rules that ultimately are unenforceable. It puts pressure on already hard-strapped state and local budgets. It makes it difficult for people here illegally to report crimes -– driving a wedge between communities and law enforcement, making our streets more dangerous and the jobs of our police officers more difficult.

And you don’t have to take my word for this. You can speak to the police chiefs and others from law enforcement here today who will tell you the same thing.

These laws also have the potential of violating the rights of innocent American citizens and legal residents, making them subject to possible stops or questioning because of what they look like or how they sound. And as other states and localities go their own ways, we face the prospect that different rules for immigration will apply in different parts of the country -– a patchwork of local immigration rules where we all know one clear national standard is needed.