BURLINGTON, Massachusetts — President Barack Obama and Republican Mitt Romney are embarking on a week heavy with travel through battleground states and appeals to key constituencies, with both campaigns wrangling over unrest in the Middle East and who is best equipped to rejuvenate the economy. Both candidates are courting voters in a series of must-win states and reaching out to a number of voting groups that could determine the election, from working-class white voters in states like Ohio and Wisconsin to Latino voters in Florida and viewers of a popular Spanish-language television network. The winner of the US presidential election is not determined by national popular vote, but by a series of state-by-state contests, making victory in battleground states such as Ohio and Florida particularly important. Obama and Romney have dueled for an advantage on foreign policy, with attention focused on unrest in the Middle East in reaction to an anti-Muslim video. Romney's campaign has pointed to the events in Egypt and Libya as evidence of national security weakness from the Obama administration. Susan Rice, the US ambassador to the United Nations, defended the administration on Sunday television talk shows, calling the critique a “very empty and baseless charge of weakness.” Romney and Obama have also tangled over China, each accusing the other of supporting policies that would move American jobs overseas. Romney released a television advertisement last week assailing Obama for “failing American workers” and ignoring unfair trade practices by China. Obama responded with an ad accusing Romney of outsourcing jobs to China when he worked in the private sector. Obama was kicking off a week of travel in Ohio on Monday, with stops planned in Cincinnati and Columbus. The president was raising campaign cash in New York on Tuesday, followed by events in Florida on Thursday, Virginia on Friday and Wisconsin on Saturday — all states that Obama carried in the 2008 election. Obama was making his first trip to Wisconsin in months and his most pronounced pitch to voters there since Romney chose Wisconsin Rep. Paul Ryan as his vice presidential running mate. Wisconsin has not voted for a Republican presidential candidate since President Ronald Reagan in 1984 and is considered one of Romney's most enticing electoral targets. Romney's itinerary included fundraising stops in the Los Angeles area on Monday along with outreach to key Latino voters, including an address to the United States Hispanic Chamber of Commerce and an interview with Spanish-language television network Telemundo. The network interviewed Obama last week. — AP
