(CNN) – Paul Ryan continued defending his speech at the Republican National Convention Tuesday, saying the link he made between President Barack Obama and a closed auto plant in Wisconsin was accurate and reflected a record of failed promises from the Democratic incumbent.
"What they are trying to suggest is that I said Barack Obama was responsible for the plant that shut down in Janesville. That's not what I was saying. Read the speech," Ryan said on NBC. He made similar comments last week on CNN's "The Situation Room with Wolf Blitzer."
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Ryan continued Tuesday, "What I was saying is the president ought to be held to account for broken promises. After the plant was shut down he said he would lead efforts to restart the plant. It's still idle."
During his speech Wednesday night, Ryan relayed a story about then-candidate Obama sharing with auto workers his hope that government could help keep their plant open. In his speech, Ryan quoted Obama as saying "if our government is there to support you ... this plant will be here for another hundred years."
Ryan added: "That plant didn't last another year. It is locked up and empty to this day."
In his remarks at the plant in February 2008, Obama was discussing a transition to producing vehicles powered by alternative energy. He said, "I know how much progress you've made – how many hybrids and fuel-efficient vehicles you're churning out. And I believe that if our government is there to support you, and give you the assistance you need to re-tool and make this transition, that this plant will be here for another hundred years. The question is not whether a clean energy economy is in our future, it's where it will thrive. I want it to thrive right here in the United States of America; right here in Wisconsin; and that's the future I'll fight for as your president."
The plant was shut down just over a year later, but the decision to close it occurred in June 2008, prior to Obama winning the election. It officially closed its doors in April 2009, a few months into Obama's first term.
Ryan said Tuesday that while Obama may not have had a hand in closing the auto plant, he was to blame for not re-opening it.
"The promise was he was going to open the plant," Ryan said. "The promise was he was going to lead an effort to retool the plant so people would be open and go back to work for 100 years. The point is he filled people with hope traveling around the country running for president making grandiose promises which are not true."
Elsewhere on Tuesday, Ryan defended Mitt Romney's decision not to mention Afghanistan in his convention speech, saying the Republican nominee had already addressed the issue in remarks to the American Legion the day before his address.
"I think you have to remember the day before that speech Mitt Romney went to the American Legion and gave a lengthy speech on the topic. He was invited, did a lengthy speech the day before," Ryan said.
In that speech, Romney briefly mentioned Afghanistan and paid tribute to troops serving there, but used the majority of his remarks to blast Obama's foreign policy record, which he characterized as weak.
Ryan said on CBS that the Republican ticket agreed with Obama's deadline to bring troops home from Afghanistan by 2014, but said there was disagreement with the president on the wisdom of withdrawal timetables.
"We do agree with the timeline," Ryan said. "Where we have some differences of opinions are political timetables for troop size. We feel that our commanders in the theater ought to have the resources they need, especially throughout the fighting season, to make sure that the counterinsurgency of operations are done with the amount of troops that are needed to see the job through as safely as possible. But we do agree with the 2014 timeline."
CNN's Ashley Killough contributed to this report.