Ross refused to be drawn, however, on whether the White House would consider vetoing the bill were it to pass through Congress.
Ross's comments came as Republican presidential candidate Ron Paul set out his own strident opposition to CISPA.
"CISPA permits both the federal government and private companies to view your private online communications without judicial oversight provided that they do so of course in the name of cybersecurity," he said on Monday.
"Simply put, CISPA encourages some of our most successful internet companies to act as government spies, sowing distrust of social media and chilling communications in one segment of the world economy where Americans still lead."
The open internet group EFF has warned that CISPA's broad wording could class many routine internet activities, such as using encryption on emails or enabling anonymity using a service called TOR, as potential threats. The act could also indemnify companies acting for security purposes from civil and criminal liability, including violating a user's privacy, provided these were not intentional, the group warned.
Despite the opposition, Mike Rogers, the chairman of the House Intelligence Committee and primary sponsor of the bill, remains confident it will be passed by the House of Representatives this week.
"I feel pretty confident that we'll close out the bill," he told the Talking Points Memo blog on Monday. Rogers also reportedly told the site he was not aware of a final stance from the Obama administration regarding his bill, and said he had met with some advocacy groups and modified CISPA as a result.
"There's some people who aren't interested in having any bill happen," Rogers told TPM. "But we've had an open and transparent dialogue with everyone who has chosen to engage with us, and there's been major progress made. This has always been a collaborative effort."
Three other cybersecurity-related bills are passing through the house this week – the Data act, which creates more oversight on security of federal computer systems and data; the Cybersecurity Enhancement Act, aimed at targeting federal cybersecurity research, and a third computer research and design bill.
Intellpuke: You can read this article by James Ball, a data journalist working for the Guardian's investigations team. You can read Mr. Ball's article in context here: www.guardian.co.uk/technology/2012/apr/24/cispa-cybersecurity-bill-opposed-obama