President Bush, speaking nearly two weeks after London's terrorist attacks, reminded Americans on Wednesday that the nation is still at war. He said Congress needs to renew terror-fighting tools in the USA Patriot Act.

Bush underscored his remarks by speaking at the Dundalk Marine Terminal, where he got a demonstration of state-of-the-art cargo-screening equipment designed to detect chemical, nuclear or conventional bombs planted by terrorists.

“We're focused here,” Bush said. “When you're at war, you can't lose sight of the fact that you're at war.”

At least 56 people died in London on July 7 when three subway trains and a bus were attacked by suicide bombers.

Shortly after Bush's speech, Maryland Democratic Sen. Barbara Mikulski issued a statement saying the president has not put enough money into port security and at least $8 billion is needed to effectively safeguard the nation's ports. Bush said he has budgeted $2.3 billion for port security this year.

“We don't need port photo ops from the president. We need dollars,” said Mikulski, emphasizing that the site of Bush's speech bore no direct relation to the Patriot Act.

Bush faces opposition from Democrats and civil liberties activists in his efforts to renew 16 provisions of the Patriot Act that expire at the end of the year.

An ABC News/Washington Post poll taken in June found that 59% of Americans favor extending the act.

The act, enacted after the 9/11 terrorist strikes, gives law enforcement agencies broad powers to combat terrorism. Bush said the act broke down barriers between law enforcement and intelligence-gathering agencies and provided new tools to track terrorists. “Terrorists are using every advantage of the 21st-century technology, and we've got to make sure our law enforcement has got the tools to fight off that advantage,” Bush said.

The American Civil Liberties Union, leading the fight against the act, says some provisions violate the liberties of all citizens.

“The government can search your home and not even tell you (and) collect information about what you buy, your hotel visits and your medical history,” the ACLU says on its website.

Lawmakers have one of those rare chances today that everyone wishes for — to go back, do it again and fix a past mistake.

In the jittery days after 9/11, Congress passed the dubiously named USA Patriot Act in a rush, under pressure and with most members not even having read it.

The law gave federal authorities vast new powers to help combat terrorism, many of them needed. At the same time, several provisions opened the door to abuses of civil liberties and privacy.

At the end of this year, some of the law's provisions are set to expire. Congress has an opportunity to renew them, fix them and ensure they remain temporary — the best way to monitor the law's use and keep law enforcement accountable. But as the House moves to consider the law's renewal, little of that seems likely. Judging by recent events, emotion rules the debate:

•Last month, House Judiciary Committee Chairman James Sensenbrenner, R-Wis., berated witnesses and stalked out of a hearing when testimony by handpicked Democratic witnesses degenerated into denunciations of the president's war on terrorism. Videos of the chaotic episode made the mock newscast on Comedy Central's The Daily Show with Jon Stewart.

•Three months ago, the Senate Intelligence Committee avoided the public airing that the bill needs so much by working on it behind closed doors.

•Since shortly after its passage, opponents have excoriated the law's “unwarranted, dangerous provisions,” scaring more than 380 communities and seven states into passing anti-Patriot Act measures. And Wednesday, the act's advocate-in-chief, President Bush, invoked the London terrorist attacks in arguing, “This is no time to let our guard down and no time to roll back good laws.”

None of this makes the nation safer from terror or from civil liberties abuse. Facts and reasoned debate could.

The voluminous law, most of it not controversial, gave authorities valuable tools to prevent terrorism, a law enforcement task quite different than catching suspects after they've committed a crime.

It also handed authorities powers that can be abused. The FBI can more easily seize records from medical providers, libraries and businesses. Those ordered to supply information are barred from letting anyone know about the Big Brother activities.

The law authorizes secret searches of homes or businesses by federal agents, with no deadline to notify owners or occupants that a search has taken place.

The Justice Department's response to critics is that the law has been tested for four years, has not been abused and deserves to become permanent. But senators from both ends of the political spectrum recently testified that abuses might not have been discovered because the law is shrouded in secrecy.

In April, Attorney General Alberto Gonzales acknowledged that the law had been used against Oregon lawyer Brandon Mayfield, who was wrongly accused as a suspect in the Madrid train bombings that killed 191. Mayfield was held for two weeks last year — his home and office searched — before the FBI admitted that it had made a mistake.

Congress has the antidote to prevent such abuse. It can fix the law's problems and ensure its most controversial provisions will have to be reviewed again soon.

The second time around, lawmakers can show that catching terrorists doesn't have to threaten the liberty of law-abiding citizens.

The USA Patriot Act's provisions let federal agents:

•Conduct court-supervised wiretaps and other electronic surveillance in terrorism investigations.

•Extend to up to a year the length of wiretaps in terrorism and espionage probes.

•Share foreign intelligence from wiretaps and other surveillance.

•Seize unopened voice mail with a warrant.

•Get search warrants from a judge that are valid nationwide.

The House of Representatives seeks to extend a 10-year “sunset,” or expiration date, for two provisions that:

•Permit “roving” wiretaps in terrorism and espionage investigations that would track a suspect's use of communications devices.

•Allow the FBI to seek a court order to obtain records from libraries, hospitals, gun stores or any business.