Arizona established itself over the past year as the most aggressive state in cracking down on illegal immigrants, gaining so much momentum with its efforts that several other states vowed to follow suit. But now the harsh realities of economics appear to have intruded, and Arizona may be looking to shed the image of hard-line anti-immigration pioneer.

In an abrupt change of course, Arizona lawmakers rejected new anti-immigration measures on Thursday, in what was widely seen as capitulation to pressure from business executives and an admission that the state’s tough stance had resulted in a chilling of the normally robust tourism and convention industry.

The State Senate voted down five bills that among other things sought to require hospitals to inform law enforcement officials when treating patients suspected of being in the country illegally and to prod the Supreme Court to rule against automatic citizenship for American-born children of illegal immigrants.

The Senate move was a victory for the Arizona business lobby, which on many issues is more moderate than state lawmakers. And it was a rebuke for the State Senate president, Russell Pearce, a Republican and the driving force behind tough immigration measures, including the law passed last April requiring police to question the status of anyone they stop if they have a “reasonable suspicion” that the person might be an illegal immigrant.