Democrats hit the campaign trail across the US this weekend

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After Sen. Amy Klobuchar tossed her hat in the ring to be the Democratic nominee for the 2020 presidential race, President Donald Trump took to Twitter to remark on her speech.

"Well, it happened again," Trump tweeted. "Amy Klobuchar announced that she is running for President, talking proudly of fighting global warming while standing in a virtual blizzard of snow, ice and freezing temperatures. Bad timing. By the end of her speech she looked like a Snowman(woman)!"

Klobuchar then tweeted back.

"Science is on my side," she said, responding to the President. "Looking forward to debating you about climate change (and many other issues). And I wonder how your hair would far in a blizzard?"

Democratic Sen. Amy Klobuchar entered the 2020 presidential race at an outside event in freezing, snowy weather in Boom Island, Minneapolis. 

“Now, we don’t let a little snow stop us. We don’t let a little cold stop us. Like, are you guys even cold?” Klobuchar said, to which the crowd shouted, “No!”

It was 16 degrees and snowing heavily when Klobuchar took the stage. The senator was not wearing any gloves.

“Now when I said that elected leaders should go not just where it’s comfortable but also where it’s uncomfortable, this is what I meant,” Klobuchar said, raising her arms and gesturing at the snow as it piled on to her and the crowd gathered before her.

The senator's team ordered 100 gallons of hot chocolate and 100 gallons of apple cider for the event and volunteers handed out packs of hand warmers as people entered the park. 

After her speech, Klobuchar spoke to CNN and said, “What makes me unique is I did this announcement speech in the middle of a blizzard and I think we need people with grit -- I have that grit.” 

President Donald Trump weighed in on Klobuchar's announcement and took a shot at her pledge to fight climate change.

"Amy Klobuchar announced that she is running for President, talking proudly of fighting global warming while standing in a virtual blizzard of snow, ice and freezing temperatures. Bad timing," Trump tweeted. 

"By the end of her speech she looked like a Snowman(woman)!" he added.

During her announcement speech earlier Sunday, Klobuchar told the crowd: “The people are on our side when it comes to climate change. Why? Because like you and I, they believe in science. That’s why in the first 100 days of my administration I will reinstate the clean power rules and gas mileage standards and put forth sweeping legislation to invest in green jobs and infrastructure. And on day one, our country will rejoin the international climate agreement.”

When asked by CNN after her speech if she was tough enough to take on Trump, Klobuchar pivoted back to the snow falling around her.

“I am tough enough to take on Donald Trump,” she said. “I would have liked to have seen him sitting here in the snow for an hour giving this speech.”

CNN's Dan Merica contributed to this report.

Sen. Amy Klobuchar emphasized the need to stand with foreign allies and face international problems as well as opportunities during her 2020 campaign launch, Sunday.

The Minnesota Democrat alluded to President Donald Trump in her launch speech, saying that U.S. military and intelligence officials “deserve better than foreign policy by tweet.”

Democratic Sen. Kirsten Gillibrand lauded Sens. Elizabeth Warren and Amy Klobuchar on Twitter Sunday after both senators officially kicked off their campaigns for the 2020 presidential race this weekend.

Gillibrand tweets:

Sen. Amy Klobuchar has joined the increasingly crowded Democratic race for President.

Klobuchar told the rally the "sense of community is fracturing across our nation right now, worn down by the petty and vicious nature of our politics. We are all tired of the shutdowns and the showdowns, the gridlock and the grandstanding.”

"Today we say enough is enough. Our nation must be governed not from chaos but from opportunity. Not by wallowing over what’s wrong, but by marching inexorably toward what’s right.”

Three-time Grammy award winning music group Sounds of Blackness sang the national anthem to kick off Minnesota Sen. Amy Klobochar’s campaign launch event Sunday. 

The group, which was launched in Minnesota’s Twin Cities in 1971, has performed at major events over the years including Olympics, the Grammys and worldwide charity benefits. 

From CNN's Katie Bernard

At an outdoor event on Boom Island Park in Minneapolis, Minnesota, Sen. Amy Klobuchar is expected to announce her 2020 presidential bid in front of a crowd of supporters who have gathered in 13-degree weather.

With a thick layer of snow on the ground at the park, snow blowers are out, and volunteers are frantically working to clear walkways for people.

The skyline of Minneapolis is barely visible behind the stage that is set up and the banks of the freezing Mississippi River – expected to be central to Klobuchar’s speech – are covered in snow.

It is expected to be snowing and 15 degrees when the senator takes the stage at 3 p.m. ET.

A Klobuchar aide says that they prepared for this by building warming tents for attendees, volunteers and the press.

Event organizers ordered 100 gallons of hot cocoa and 100 gallons of apple cider. As people entered the park, volunteers handed out two things: Small American flags and packs of Little Hotties hand warmers.

Most attendees are unphased by the weather – and, in fact, give Klobuchar credit for announcing outside in February. 

“It just truly represents Minnesota,” said Renee Anderson, a 22-year-old from Bloomington. “If somebody doesn’t want to come to an event that is outside in Minnesota, do they really live here? Are they really excited?” 

Scott Herzog, a 50-year-old manufacturer from West St. Paul said the same as he stood in front of the stage two hours before the event starts: “This is true Minnesota: Snow and Amy Klobuchar.”

From CNN's Dan Merica

Democratic Sen. Elizabeth Warren on Sunday predicted that President Donald Trump may be in jail by Election Day in 2020.

Warren, who officially launched her presidential campaign on Saturday, made the comment at an event in Cedar Rapids, Iowa, telling voters that “By the time we get to 2020, Donald Trump may not even be President.”

“In fact, he may not even be a free person,” she said.

The moment marked a notable shift in tone for Warren, who has been reticent to directly take on Trump by name since she announced her exploratory campaign committee on New Year’s Eve.

Lamenting that the country is in a “dangerous moment,” Warren, who represents Massachusetts, said “what happens in 2020 is going to determine the direction of our nation, the direction of our people.”

She added about Trump: “Every day, there’s a racist tweet, a hateful tweet, something really dark and ugly. And what are we, as candidates, as activists, the press, going to do about it? Are we going to let him use those to divide us?”

From CNN's MJ Lee