Disclaimer: I own anyone you don't recognize. Everyone else belongs to Anthony Zuiker and Aaron Sorkin.

A/N: I was watching The West Wing last night and this popped into my head. Why? I don't know. It just did and it won't go away so I knew I had to write it so... this is a cross-over.

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"Mornin' guys." Calleigh drawled. Eric sighed and tossed the paper aside. "What?"

"El Presidente is coming to Miami. The mayor is having some party in his honor. Which means he will want Miami's finest there, which means we will be there."

"Why is he coming here?" Tim asked, looking up.

"Campaigning." Calleigh replied. The boys looked at her. "What? I watch the news."

"I don't like him." Tim said. "Do you think I can get out of going to this thing?"

"Oh and miss the mayor introducing Horatio?" Eric snorted. "I swear if Horatio was gay they'd be lovers. Anytime some big shot comes to Miami Horatio is there right by the mayor's side."

"Well... he did save his life." Calleigh said, sitting next to Tim.

"Doesn't mean he has to be right up our asses all the time." Tim said, kissing Calleigh's forehead. She smiled and moved closer to him. "It's been a slow day."

"But that's good. No one is killing anyone today."

"You're way too cheerful."

"I love you too."

Eric rolled his eyes as a cell phone went off. Calleigh realized it was hers and answered it.

"Calleigh Duquesne. Hey. Really. You are? You are! Oh but you'll be busy with all that stuff. You got time off? You're not helping? I can't wait to see you! Alright. Okay. Bye."

"Do we get to know what's going on?" Eric asked.

"That was my sister." Calleigh said.

"Your sister?"

"I have a twin."

"She hot?"

"She's me." Calleigh smiled. "Anyway. Her boss gave her some time off so she's coming down to Miami to visit."

"What's her name?" Eric asked, still reading the newspaper.

"Ainsley Hayes."

"I've heard that name before."

Calleigh nodded and headed for the door.

"She works for the president." and disappeared out into the hallway. Tim and Eric looked at each other and ran after Calleigh.

"Hey! You can't just say, 'she works for the president' and leave!" Eric exclaimed. "Is she married?"

"No. But she has her eye on somebody." Calleigh said, walking into Ballistics. The boys trailed after her and sat down.

"Who?"

"Some guy at her work."

"Is she having an affair with Bartlet?" Tim asked. Calleigh giggled and shook her head. "Oh your parents must love this, her being in love with a Democrat."

"She's not in love."

"So it's someone at the White House. Who?"

"Is it that guy... who... does something?" Eric asked.

"Well he does something. I just don't know what he does. She won't admit she likes him. Just talks about him non-stop. Actually she says they hate each other."

"Sounds a lot like you and Speed."

"Thanks Delko." Tim said flatly.

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Few days later...

Tim walked out into the lobby and saw Calleigh standing at the receptionist's desk.

"Hey." he walked up to her and kissed her cheek.

"Um... do I know you?"

Tim pulled away from the blonde and stared at her. He groaned inwardly, realizing this was Ainsley. How the hell was he going to tell the apart? 'Aha! She's got blue eyes. Calleigh has green.'

"You're Ainsley aren't you?" Tim asked, extending his hand. "Tim Speedle. I'm Calleigh's boyfriend. I mistook you for her. Sorry."

"Oh you're the yankee!" Ainsley smiled. "Yeah Calleigh's told me lots about you."

"Miss Hayes?" Paula asked. She turned around and nodded. "Calleigh said she'd be up in one minute."

"Okay, thank you." she turned back to Tim and they stood in silence for a few minutes.

"So you work at the White House." he finally said. "That must be... cool."

"Yeah. I'm the only Republican on a staff of Democrats." Ainsley said. "But some of them are okay. Donna and C.J are nice. Josh is funny. Leo has treated me good..."

Tim had to hide a smile. While Calleigh was calm and collected, Ainsley rambled on and on, seeming not to know when to stop talking.

"Hey!" Calleigh smiled, seeing Tim. He smiled back and she leaned up to kiss him quickly. "Ainsley, oh my lord! I can't believe you're here!"

The sisters hugged and Calleigh looked between her sister and boyfriend.

"Ainsley, this is Ti—"

"We've met." Tim said quickly.

"Are you hungry?" Calleigh asked.

"No. I ate on the plane." Ainsley said.

"Airline food? That must've sucked." Tim said.

"Oh no." Ainsley laughed. "Air Force One. Food is awesome. Wish Sam wasn't sitting near me though, so annoying."

Tim blinked and nodded.

"Oh-kay. Babe, I'm gonna go work at that trace evidence. You two have fun. Nice meeting you Ainsley."

"Yes it was nice meeting you too Tom."

"Tim."

"Right." Ainsley nodded, then turned to Calleigh. "Were you working? I'm so sorry. I can go sit at a hotel or something. I didn't mean to interrupt you."

"Ainsley, no," Calleigh laughed. "I'm getting off right now. Tim's just pulling over time tonight. Let's go get some dinner. He's gonna meet us later though."

"I'm not hungry." Ainsley insisted. Calleigh gave her a look. "Okay let's go."

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"Admit it Sam, you were upset to see her go." Josh said.

"I don't know what you're talking about."

"I'm not stupid."

"Funny, you look it."

"Looks can be deceiving."

"Not yours." Sam quipped. "I'm starving."

"You've been hanging around with her too much. She's always hungry." Josh said. "Hey..."

"Hey what?"

"Ainsley just walked in."

Sam's head snapped up, then he quickly hid behind his menu.

"Hey Ainsley!" Josh called, waving her over. "See you met up with your... sister, right?"

"Yes. Calleigh this is Josh Lyman and Sam Seaborn. Guys, this is my sister Calleigh."

"Nice to meet all of you." Calleigh smiled.

"You have a wonderful sister." Josh said. "Ain't that right Sam?"

"Huh? Oh hey Ainsley."

"Hi Sam." she smiled. He smiled back, a smile that did not go unnoticed by Josh.

"Yeah she's brings a smile to all of our faces." Josh smiled.

"Sorry I'm late." a flustered Tim appeared. "Paula gave my evidence to Eric, who gave it to Valera, who gave it back to Paula, who put it in evidence and then one of the machines broke."

Calleigh gave him a look. The other two were looking at the New Yorker intently.

"This is Tim Speedle." Ainsley said. "Tim, these are my co-workers. Josh Lyman and Sam Seaborn."

"As in Sam Seaborn, the one Ainsley wiped the floor with on Capital Beat." Josh added, earning him another kick from Sam. Josh leaned over and shook Tim's hand.

"How do you know them?" he asked.

"He's Calleigh's boyfriend." Ainsley supplied. "Well uh... let's not bug you anymore."

Josh gave Sam a swift kick in shin.

"Ow. What the hell was that for?" he growled.

"Ainsley, why don't you three join us?" Josh suggested.

"Oh no, that's fine..." she mumbled.

"No, come on. We got room." Josh said. Callegih wasn't so thrilled about the idea. She hadn't seen her sister in about a year and wanted to talk but she would have her the whole week and Calleigh gave in. She watched Ainsley from across the table and saw her giving Sam glances and small smiles. He returned them and Calleigh nudged Tim lightly but he was in a conversation with Josh. She was just going to work this one out herself.