On Tuesday, the U.S. Department of Justice said that it had closed its investigation into the acquisition, clearing one of the deal's legal and regulatory hurdles. The merger also faces scrutiny by the courts because of the many lawsuits filed on behalf of PayPal shareholders who want to block the deal. Because it is only issuing about 8 percent of its outstanding shares to buy PayPal, eBay is not expected to put the matter to a shareholder vote. eBay representatives did not return calls seeking comment about the merger. PayPal will hold the merger vote at a special shareholder meeting at its former headquarters in Palo Alto, Calif. Shareholders will also be able to vote by proxy.